TY  - JOUR
AU  - Bosnar, Sanja
AU  - Rac, Vladislav
AU  - Stošić, Dušan
AU  - Travert, Arnaud
AU  - Postole, Georgeta
AU  - Auroux, Aline
AU  - Škapin, Srečo
AU  - Damjanović-Vasilić, Ljiljana
AU  - Bronić, Josip
AU  - Du, Xuesen
AU  - Marković, Smilja
AU  - Pavlović, Vladimir
AU  - Rakić, Vesna
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5961
AB  - Dual templating approach, using hexadecyltrimethylammonium bromide (CTAB), was employed in an attempt to synthesize hierarchical ZSM-5 zeolite. Amount of mesoporogen and the duration of aging of the precursor were varied. Majority of the synthesis routes resulted in phase separation, yielding separate ZSM-5 and amorphous mesoporous material. The relative amounts of the two phases were dependent on the CTAB amount ratio and also significantly on the duration of precursor aging before CTAB addition. One particular combination of the two factors led to the formation of a homogeneous hierarchical form of ZSM-5 with leafy morphology, consisting of intergrown thin crystalline sheets which formed flower-like structures. The hierarchical ZSM-5 possessed significant microporous (≈95 m2/g) and highly developed mesoporous surface (≈470 m2/g), with a relatively broad distribution of mesopore sizes (<20 nm). The acidity of all samples was studied in detail. Isothermal microcalorimetry/volumetry of ammonia adsorption provided quantitative data on the number and distribution of strength of acidic sites. In situ FTIR of pyridine and collidine adsorption was used to quantify Brønsted and Lewis acid sites, and to provide information on their location - in the micropores or mesopores/external surface. The hierarchical ZSM-5 possessed both Lewis and Brønsted acidity, with Brønsted sites located mainly in the micropores. All samples were fully characterized using XRD, low temperature nitrogen adsorption, FESEM and EDS. The synthetic route used for obtaining the ZSM-5 zeolite with flower-like morphology is a simple strategy for preparing hierarchical ZSM-5 forms targeting enhanced diffusivity and accessibility of catalytically active sites.
PB  - Elsevier B.V.
T2  - Microporous and Mesoporous Materials
T1  - Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study
SP  - 111534
VL  - 329
DO  - 10.1016/j.micromeso.2021.111534
ER  - 

@article{
author = "Bosnar, Sanja and Rac, Vladislav and Stošić, Dušan and Travert, Arnaud and Postole, Georgeta and Auroux, Aline and Škapin, Srečo and Damjanović-Vasilić, Ljiljana and Bronić, Josip and Du, Xuesen and Marković, Smilja and Pavlović, Vladimir and Rakić, Vesna",
year = "2021",
abstract = "Dual templating approach, using hexadecyltrimethylammonium bromide (CTAB), was employed in an attempt to synthesize hierarchical ZSM-5 zeolite. Amount of mesoporogen and the duration of aging of the precursor were varied. Majority of the synthesis routes resulted in phase separation, yielding separate ZSM-5 and amorphous mesoporous material. The relative amounts of the two phases were dependent on the CTAB amount ratio and also significantly on the duration of precursor aging before CTAB addition. One particular combination of the two factors led to the formation of a homogeneous hierarchical form of ZSM-5 with leafy morphology, consisting of intergrown thin crystalline sheets which formed flower-like structures. The hierarchical ZSM-5 possessed significant microporous (≈95 m2/g) and highly developed mesoporous surface (≈470 m2/g), with a relatively broad distribution of mesopore sizes (<20 nm). The acidity of all samples was studied in detail. Isothermal microcalorimetry/volumetry of ammonia adsorption provided quantitative data on the number and distribution of strength of acidic sites. In situ FTIR of pyridine and collidine adsorption was used to quantify Brønsted and Lewis acid sites, and to provide information on their location - in the micropores or mesopores/external surface. The hierarchical ZSM-5 possessed both Lewis and Brønsted acidity, with Brønsted sites located mainly in the micropores. All samples were fully characterized using XRD, low temperature nitrogen adsorption, FESEM and EDS. The synthetic route used for obtaining the ZSM-5 zeolite with flower-like morphology is a simple strategy for preparing hierarchical ZSM-5 forms targeting enhanced diffusivity and accessibility of catalytically active sites.",
publisher = "Elsevier B.V.",
journal = "Microporous and Mesoporous Materials",
title = "Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study",
pages = "111534",
volume = "329",
doi = "10.1016/j.micromeso.2021.111534"
}

Bosnar, S., Rac, V., Stošić, D., Travert, A., Postole, G., Auroux, A., Škapin, S., Damjanović-Vasilić, L., Bronić, J., Du, X., Marković, S., Pavlović, V.,& Rakić, V.. (2021). Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study. in Microporous and Mesoporous Materials
Elsevier B.V.., 329, 111534.
https://doi.org/10.1016/j.micromeso.2021.111534

Bosnar S, Rac V, Stošić D, Travert A, Postole G, Auroux A, Škapin S, Damjanović-Vasilić L, Bronić J, Du X, Marković S, Pavlović V, Rakić V. Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study. in Microporous and Mesoporous Materials. 2021;329:111534.
doi:10.1016/j.micromeso.2021.111534 .

Bosnar, Sanja, Rac, Vladislav, Stošić, Dušan, Travert, Arnaud, Postole, Georgeta, Auroux, Aline, Škapin, Srečo, Damjanović-Vasilić, Ljiljana, Bronić, Josip, Du, Xuesen, Marković, Smilja, Pavlović, Vladimir, Rakić, Vesna, "Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study" in Microporous and Mesoporous Materials, 329 (2021):111534,
https://doi.org/10.1016/j.micromeso.2021.111534 . .

TY  - JOUR
AU  - Milojević-Rakić, M.
AU  - Dondur, Vera
AU  - Damjanović-Vasilić, Ljiljana
AU  - Rac, Vladislav
AU  - Rakić, Vesna
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4737
AB  - The competitive adsorption of aromatic hydrocarbons (benzene, methyl- and ethyl-benzene) and water on FeZSM-5 zeolites have been investigated by means of temperature-programmed desorption coupled with mass spectrometry (TPD/MS). The incorporation of iron in zeolite was done by aqueous ion exchange using dilute solutions of Fe complexes (ferric citrate and ferrous oxalate) and ferric nitrate. Diffuse reflectance UV-Vis spectroscopy and temperature-programmed reduction (TPR) were applied to characterize active sites on investigated zeolites. The existence of different iron species on FeZSM-5 zeolites was revealed. It has been demonstrated that the activity of the Fe exchanged zeolite depends on the iron salt used for ion exchange. The isolated, dispersed ions, which are often considered to be essential for adsorption and catalysis, were obtained with high yield only by ion exchange in the presence of ferrous oxalate. TPD/MS measurements show that aromatic hydrocarbons adsorb on specific, strong active sites in hydrated zeolites. The binding occurred when organic molecules replace water previously adsorbed at the same sites. Benzene showed non-dissociative adsorption/desorption, while new mass fragments were recorded during methyl-benzene and ethyl-benzene desorption implying their dissociative adsorption/desorption on active sites in hydrated zeolites.
PB  - Springer, Dordrecht
T2  - Reaction Kinetics Mechanisms and Catalysis
T1  - The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite
EP  - 246
IS  - 1
SP  - 231
VL  - 123
DO  - 10.1007/s11144-017-1275-y
ER  - 

@article{
author = "Milojević-Rakić, M. and Dondur, Vera and Damjanović-Vasilić, Ljiljana and Rac, Vladislav and Rakić, Vesna",
year = "2018",
abstract = "The competitive adsorption of aromatic hydrocarbons (benzene, methyl- and ethyl-benzene) and water on FeZSM-5 zeolites have been investigated by means of temperature-programmed desorption coupled with mass spectrometry (TPD/MS). The incorporation of iron in zeolite was done by aqueous ion exchange using dilute solutions of Fe complexes (ferric citrate and ferrous oxalate) and ferric nitrate. Diffuse reflectance UV-Vis spectroscopy and temperature-programmed reduction (TPR) were applied to characterize active sites on investigated zeolites. The existence of different iron species on FeZSM-5 zeolites was revealed. It has been demonstrated that the activity of the Fe exchanged zeolite depends on the iron salt used for ion exchange. The isolated, dispersed ions, which are often considered to be essential for adsorption and catalysis, were obtained with high yield only by ion exchange in the presence of ferrous oxalate. TPD/MS measurements show that aromatic hydrocarbons adsorb on specific, strong active sites in hydrated zeolites. The binding occurred when organic molecules replace water previously adsorbed at the same sites. Benzene showed non-dissociative adsorption/desorption, while new mass fragments were recorded during methyl-benzene and ethyl-benzene desorption implying their dissociative adsorption/desorption on active sites in hydrated zeolites.",
publisher = "Springer, Dordrecht",
journal = "Reaction Kinetics Mechanisms and Catalysis",
title = "The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite",
pages = "246-231",
number = "1",
volume = "123",
doi = "10.1007/s11144-017-1275-y"
}

Milojević-Rakić, M., Dondur, V., Damjanović-Vasilić, L., Rac, V.,& Rakić, V.. (2018). The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite. in Reaction Kinetics Mechanisms and Catalysis
Springer, Dordrecht., 123(1), 231-246.
https://doi.org/10.1007/s11144-017-1275-y

Milojević-Rakić M, Dondur V, Damjanović-Vasilić L, Rac V, Rakić V. The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite. in Reaction Kinetics Mechanisms and Catalysis. 2018;123(1):231-246.
doi:10.1007/s11144-017-1275-y .

Milojević-Rakić, M., Dondur, Vera, Damjanović-Vasilić, Ljiljana, Rac, Vladislav, Rakić, Vesna, "The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite" in Reaction Kinetics Mechanisms and Catalysis, 123, no. 1 (2018):231-246,
https://doi.org/10.1007/s11144-017-1275-y . .

TY  - JOUR
AU  - Rac, Vladislav
AU  - Rakić, Vesna
AU  - Damjanović-Vasilić, Ljiljana
AU  - Dondur, Vera
AU  - Auroux, Aline
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4487
AB  - Room temperature adsorption of CO and N2O using isothermal calorimetry and in situ FTIR spectroscopy on bimetallic and monometallic forms of Cu, Fe and Mn exchanged zeolite ZSM-5 was studied. The two complementary techniques allowed the assessment of the strengths of interactions as well as the identification of the cations active in adsorption. In bimetallic samples containing Cu, a synergistic effect was observed for CO adsorption, i.e higher strengths of adsorption were detected than for corresponding monometallic samples. Such an effect was not detected for N2O. Furthermore, FTIR measurements revealed that N2O adsorption was somewhat restricted for the cation which was introduced the first in bimetallic samples. These findings imply the importance of the order of cation introduction and the procedure of ion exchange process for the adsorptive properties of bimetallic ZSM-5 and, consequently, catalytic reactions where adsorption of N2O is an important reaction step.
PB  - Elsevier, Amsterdam
T2  - Applied Surface Science
T1  - Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study
EP  - 1140
SP  - 1134
VL  - 423
DO  - 10.1016/j.apsusc.2017.06.269
ER  - 

@article{
author = "Rac, Vladislav and Rakić, Vesna and Damjanović-Vasilić, Ljiljana and Dondur, Vera and Auroux, Aline",
year = "2017",
abstract = "Room temperature adsorption of CO and N2O using isothermal calorimetry and in situ FTIR spectroscopy on bimetallic and monometallic forms of Cu, Fe and Mn exchanged zeolite ZSM-5 was studied. The two complementary techniques allowed the assessment of the strengths of interactions as well as the identification of the cations active in adsorption. In bimetallic samples containing Cu, a synergistic effect was observed for CO adsorption, i.e higher strengths of adsorption were detected than for corresponding monometallic samples. Such an effect was not detected for N2O. Furthermore, FTIR measurements revealed that N2O adsorption was somewhat restricted for the cation which was introduced the first in bimetallic samples. These findings imply the importance of the order of cation introduction and the procedure of ion exchange process for the adsorptive properties of bimetallic ZSM-5 and, consequently, catalytic reactions where adsorption of N2O is an important reaction step.",
publisher = "Elsevier, Amsterdam",
journal = "Applied Surface Science",
title = "Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study",
pages = "1140-1134",
volume = "423",
doi = "10.1016/j.apsusc.2017.06.269"
}

Rac, V., Rakić, V., Damjanović-Vasilić, L., Dondur, V.,& Auroux, A.. (2017). Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study. in Applied Surface Science
Elsevier, Amsterdam., 423, 1134-1140.
https://doi.org/10.1016/j.apsusc.2017.06.269

Rac V, Rakić V, Damjanović-Vasilić L, Dondur V, Auroux A. Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study. in Applied Surface Science. 2017;423:1134-1140.
doi:10.1016/j.apsusc.2017.06.269 .

Rac, Vladislav, Rakić, Vesna, Damjanović-Vasilić, Ljiljana, Dondur, Vera, Auroux, Aline, "Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study" in Applied Surface Science, 423 (2017):1134-1140,
https://doi.org/10.1016/j.apsusc.2017.06.269 . .

TY  - JOUR
AU  - Rakić, Vesna
AU  - Damjanović, Ljiljana
AU  - Rac, Vladislav
AU  - Stošić, Dušan
AU  - Dondur, Vera
AU  - Auroux, Aline
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2397
AB  - The present work is focused on the adsorption of nicotine from aqueous solutions. Based on the data available in the literature, serious concern is claimed regarding the appearance of nicotine in ground, surface and municipal wastewaters. In order to investigate the possibility of abatement by adsorption, three different types of zeolites (BEA, MFI and HEU) have been applied as adsorbents. In addition, the adsorption was per-formed on activated carbon, a solid customarily used for removal of pollutants from water. The adsorption of nicotine was studied by isothermal microcalorimetry, which provided the heats evolved as a result of adsorption. The values of these heats revealed that the investigated solids are energetically heterogeneous for the adsorption of nicotine from aqueous solution. Additionally, the amounts of adsorbed pollutant were determined and presented in the form of adsorption isotherms. The obtained adsorption isotherms were interpreted using Langmuir, Freundlich, and Sips equations; the latter was found to express high level of agreement with experimental data of nicotine adsorption on the investigated solids. The possibilities to regenerate the adsorbents were examined by means of thermogravimetry coupled with mass spectrometry. From all obtained results, it was possible to distinguish zeolite BEA as a material which possesses the capacity for adsorption of nicotine comparable to that of activated carbon.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Water Research
T1  - The adsorption of nicotine from aqueous solutions on different zeolite structures
EP  - 2057
IS  - 6
SP  - 2047
VL  - 44
DO  - 10.1016/j.watres.2009.12.019
ER  - 

@article{
author = "Rakić, Vesna and Damjanović, Ljiljana and Rac, Vladislav and Stošić, Dušan and Dondur, Vera and Auroux, Aline",
year = "2010",
abstract = "The present work is focused on the adsorption of nicotine from aqueous solutions. Based on the data available in the literature, serious concern is claimed regarding the appearance of nicotine in ground, surface and municipal wastewaters. In order to investigate the possibility of abatement by adsorption, three different types of zeolites (BEA, MFI and HEU) have been applied as adsorbents. In addition, the adsorption was per-formed on activated carbon, a solid customarily used for removal of pollutants from water. The adsorption of nicotine was studied by isothermal microcalorimetry, which provided the heats evolved as a result of adsorption. The values of these heats revealed that the investigated solids are energetically heterogeneous for the adsorption of nicotine from aqueous solution. Additionally, the amounts of adsorbed pollutant were determined and presented in the form of adsorption isotherms. The obtained adsorption isotherms were interpreted using Langmuir, Freundlich, and Sips equations; the latter was found to express high level of agreement with experimental data of nicotine adsorption on the investigated solids. The possibilities to regenerate the adsorbents were examined by means of thermogravimetry coupled with mass spectrometry. From all obtained results, it was possible to distinguish zeolite BEA as a material which possesses the capacity for adsorption of nicotine comparable to that of activated carbon.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Water Research",
title = "The adsorption of nicotine from aqueous solutions on different zeolite structures",
pages = "2057-2047",
number = "6",
volume = "44",
doi = "10.1016/j.watres.2009.12.019"
}

Rakić, V., Damjanović, L., Rac, V., Stošić, D., Dondur, V.,& Auroux, A.. (2010). The adsorption of nicotine from aqueous solutions on different zeolite structures. in Water Research
Pergamon-Elsevier Science Ltd, Oxford., 44(6), 2047-2057.
https://doi.org/10.1016/j.watres.2009.12.019

Rakić V, Damjanović L, Rac V, Stošić D, Dondur V, Auroux A. The adsorption of nicotine from aqueous solutions on different zeolite structures. in Water Research. 2010;44(6):2047-2057.
doi:10.1016/j.watres.2009.12.019 .

Rakić, Vesna, Damjanović, Ljiljana, Rac, Vladislav, Stošić, Dušan, Dondur, Vera, Auroux, Aline, "The adsorption of nicotine from aqueous solutions on different zeolite structures" in Water Research, 44, no. 6 (2010):2047-2057,
https://doi.org/10.1016/j.watres.2009.12.019 . .

TY  - JOUR
AU  - Damjanović, Ljiljana
AU  - Rakić, Vesna
AU  - Rac, Vladislav
AU  - Stošić, Dušan
AU  - Auroux, Aline
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2364
AB  - This work reports results on phenol adsorption from aqueous solutions on synthetic BEA (beta) and MFI (ZSM-5) zeolites, studied by heat-flow microcalorimetry. For the sake of comparison, the adsorption was performed on activated carbon, a solid customarily used for removal of phenol from water. The obtained values of heats evolved during phenol adsorption indicate the heterogeneity of active sites present on the investigated systems for the adsorption of phenol. In addition, the amounts of adsorbed pollutant were determined and presented in the form of adsorption isotherms, which were interpreted using Langmuir, Freundlich, Dubinin-Astakov and Sips' equations. The latter was found to express high level of agreement with experimental data. The results obtained in this work reveal that the adsorption of phenol on zeolites depends on both Si/Al ratio and on the pore size. Hydrophobic zeolites that possess higher contents of Si show higher affinities for phenol adsorption. Among investigated zeolites, zeolite beta possesses the highest capacity for adsorption of phenol. The possibility of regeneration of used adsorbents was investigated by thermal desorption technique. It has been shown that in the case of beta zeolite the majority of adsorbed phenol is easily released in the low temperature region.
PB  - Elsevier, Amsterdam
T2  - Journal of Hazardous Materials
T1  - The investigation of phenol removal from aqueous solutions by zeolites as solid adsorbents
EP  - 484
IS  - 1-3
SP  - 477
VL  - 184
DO  - 10.1016/j.jhazmat.2010.08.059
ER  - 

@article{
author = "Damjanović, Ljiljana and Rakić, Vesna and Rac, Vladislav and Stošić, Dušan and Auroux, Aline",
year = "2010",
abstract = "This work reports results on phenol adsorption from aqueous solutions on synthetic BEA (beta) and MFI (ZSM-5) zeolites, studied by heat-flow microcalorimetry. For the sake of comparison, the adsorption was performed on activated carbon, a solid customarily used for removal of phenol from water. The obtained values of heats evolved during phenol adsorption indicate the heterogeneity of active sites present on the investigated systems for the adsorption of phenol. In addition, the amounts of adsorbed pollutant were determined and presented in the form of adsorption isotherms, which were interpreted using Langmuir, Freundlich, Dubinin-Astakov and Sips' equations. The latter was found to express high level of agreement with experimental data. The results obtained in this work reveal that the adsorption of phenol on zeolites depends on both Si/Al ratio and on the pore size. Hydrophobic zeolites that possess higher contents of Si show higher affinities for phenol adsorption. Among investigated zeolites, zeolite beta possesses the highest capacity for adsorption of phenol. The possibility of regeneration of used adsorbents was investigated by thermal desorption technique. It has been shown that in the case of beta zeolite the majority of adsorbed phenol is easily released in the low temperature region.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Hazardous Materials",
title = "The investigation of phenol removal from aqueous solutions by zeolites as solid adsorbents",
pages = "484-477",
number = "1-3",
volume = "184",
doi = "10.1016/j.jhazmat.2010.08.059"
}

Damjanović, L., Rakić, V., Rac, V., Stošić, D.,& Auroux, A.. (2010). The investigation of phenol removal from aqueous solutions by zeolites as solid adsorbents. in Journal of Hazardous Materials
Elsevier, Amsterdam., 184(1-3), 477-484.
https://doi.org/10.1016/j.jhazmat.2010.08.059

Damjanović L, Rakić V, Rac V, Stošić D, Auroux A. The investigation of phenol removal from aqueous solutions by zeolites as solid adsorbents. in Journal of Hazardous Materials. 2010;184(1-3):477-484.
doi:10.1016/j.jhazmat.2010.08.059 .

Damjanović, Ljiljana, Rakić, Vesna, Rac, Vladislav, Stošić, Dušan, Auroux, Aline, "The investigation of phenol removal from aqueous solutions by zeolites as solid adsorbents" in Journal of Hazardous Materials, 184, no. 1-3 (2010):477-484,
https://doi.org/10.1016/j.jhazmat.2010.08.059 . .

TY  - JOUR
AU  - Stošić, Dušan
AU  - Damjanović, Ljiljana
AU  - Hercigonja, Radmila
AU  - Dondur, Vera
AU  - Rac, Vladislav
AU  - Rakić, Vesna
PY  - 2008
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1647
AB  - L-histidine, a naturally occurring amino acid, was incorporated inside the supercages of FAU type zeolite in a form of Me-complex entity (Me = Cu(II), Zn(II), Fe(III)). The preparation was done either by ion-exchange procedure, or previously prepared Me-histidine complex was incorporated into the a cages of Y zeolite by occlusion. The preparation procedure was found to be a very important factor, as well as the amount of metal complex loaded on the zeolite. The characterization of obtained samples was performed using Diffuse Reflectance Ultraviolet-Visible Spectroscopy (DRUV-Vis), 13C MAS NMR and Infrared Spectroscopy (FTIR). It was noticed that 1-hostidine interacted with the zeolitic framework, and with the extra-framework cation, as well. The results obtained by TG-DSC/MAS technique, revealed that the thermal stability of incorporated histidine was increased, in comparison with that one of pure histidine.
AB  - U ovom radu, Me-histidin (Me = Zn(II), Cu(II), Fe(III)) kompleksi ugrađivani su u strukturu Yzeolita, primenom dva različita postupka: (1) Me-histidin kompleksi su pravljeni u dejonizovanoj vodi i zatim mešani sa NaY zeolitom, (2) histidinje rastvoren u vodi i u rastvor su dodavani jonski izmenjeni Y zeoliti. UV-spektroskopijom tečne faze je utvrđeno da je proces imobilizacije izvršen za 24 h. Ovako dobijem čvrsti materijali su detaljno okarakterisani hemijski i metodama XRD, NMR, IR, DR UV-VIS, dok su njihove termalne stabilnosti ispitivane primenom TG-DSC/MAS tehnike. Dobijem rezultati omogućili su poređenje osobina sintetisanih uzoraka.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - The incorporation of Me-histidine complexes in the structure of FAU-type zeolite: Characterization of the obtained materials
T1  - Ugradnja Me-histidin kompleksa u strukturu FAU zeolita - karakterizacija odbijenih materijala
EP  - 130
IS  - 3
SP  - 125
VL  - 62
DO  - 10.2298/HEMIND0803125S
ER  - 

@article{
author = "Stošić, Dušan and Damjanović, Ljiljana and Hercigonja, Radmila and Dondur, Vera and Rac, Vladislav and Rakić, Vesna",
year = "2008",
abstract = "L-histidine, a naturally occurring amino acid, was incorporated inside the supercages of FAU type zeolite in a form of Me-complex entity (Me = Cu(II), Zn(II), Fe(III)). The preparation was done either by ion-exchange procedure, or previously prepared Me-histidine complex was incorporated into the a cages of Y zeolite by occlusion. The preparation procedure was found to be a very important factor, as well as the amount of metal complex loaded on the zeolite. The characterization of obtained samples was performed using Diffuse Reflectance Ultraviolet-Visible Spectroscopy (DRUV-Vis), 13C MAS NMR and Infrared Spectroscopy (FTIR). It was noticed that 1-hostidine interacted with the zeolitic framework, and with the extra-framework cation, as well. The results obtained by TG-DSC/MAS technique, revealed that the thermal stability of incorporated histidine was increased, in comparison with that one of pure histidine., U ovom radu, Me-histidin (Me = Zn(II), Cu(II), Fe(III)) kompleksi ugrađivani su u strukturu Yzeolita, primenom dva različita postupka: (1) Me-histidin kompleksi su pravljeni u dejonizovanoj vodi i zatim mešani sa NaY zeolitom, (2) histidinje rastvoren u vodi i u rastvor su dodavani jonski izmenjeni Y zeoliti. UV-spektroskopijom tečne faze je utvrđeno da je proces imobilizacije izvršen za 24 h. Ovako dobijem čvrsti materijali su detaljno okarakterisani hemijski i metodama XRD, NMR, IR, DR UV-VIS, dok su njihove termalne stabilnosti ispitivane primenom TG-DSC/MAS tehnike. Dobijem rezultati omogućili su poređenje osobina sintetisanih uzoraka.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "The incorporation of Me-histidine complexes in the structure of FAU-type zeolite: Characterization of the obtained materials, Ugradnja Me-histidin kompleksa u strukturu FAU zeolita - karakterizacija odbijenih materijala",
pages = "130-125",
number = "3",
volume = "62",
doi = "10.2298/HEMIND0803125S"
}

Stošić, D., Damjanović, L., Hercigonja, R., Dondur, V., Rac, V.,& Rakić, V.. (2008). The incorporation of Me-histidine complexes in the structure of FAU-type zeolite: Characterization of the obtained materials. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 62(3), 125-130.
https://doi.org/10.2298/HEMIND0803125S

Stošić D, Damjanović L, Hercigonja R, Dondur V, Rac V, Rakić V. The incorporation of Me-histidine complexes in the structure of FAU-type zeolite: Characterization of the obtained materials. in Hemijska industrija. 2008;62(3):125-130.
doi:10.2298/HEMIND0803125S .

Stošić, Dušan, Damjanović, Ljiljana, Hercigonja, Radmila, Dondur, Vera, Rac, Vladislav, Rakić, Vesna, "The incorporation of Me-histidine complexes in the structure of FAU-type zeolite: Characterization of the obtained materials" in Hemijska industrija, 62, no. 3 (2008):125-130,
https://doi.org/10.2298/HEMIND0803125S . .

TY  - CONF
AU  - Dondur, Vera
AU  - Rakić, Vesna
AU  - Damjanović, Ljiljana
AU  - Hercigonja, Radmila
AU  - Auroux, Aline
PY  - 2006
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1341
AB  - Temperature-programmed desorption coupled with mass spectrometer as a detector (TPD), IR and C-13 NMR measurements are used to study the adsorption of n-hexane on hydrated HZSM-5 and NH(4)ZSM-5 zeolites. The C-13 NMR measurements show that n-hexane can access the pore structure of ZSM-5 zeolites previously saturated with water. TPD spectra of n-hexane are monitored in the temperature region 50-300 degrees C, in the case of fully or partially hydrated samples; two-stage desorption of n-hexane is found. Simultaneous desorption of water and n-hexane in the same temperature region are found, in all investigated samples.
PB  - Springer, Dordrecht
C3  - Journal of Thermal Analysis and Calorimetry
T1  - Temperature-programmed desorption of n-hexane from hydrated HZSM-5 and NH(4)ZSM-5 zeolites
EP  - 238
IS  - 1
SP  - 233
VL  - 84
DO  - 10.1007/s10973-005-7160-3
ER  - 

@conference{
author = "Dondur, Vera and Rakić, Vesna and Damjanović, Ljiljana and Hercigonja, Radmila and Auroux, Aline",
year = "2006",
abstract = "Temperature-programmed desorption coupled with mass spectrometer as a detector (TPD), IR and C-13 NMR measurements are used to study the adsorption of n-hexane on hydrated HZSM-5 and NH(4)ZSM-5 zeolites. The C-13 NMR measurements show that n-hexane can access the pore structure of ZSM-5 zeolites previously saturated with water. TPD spectra of n-hexane are monitored in the temperature region 50-300 degrees C, in the case of fully or partially hydrated samples; two-stage desorption of n-hexane is found. Simultaneous desorption of water and n-hexane in the same temperature region are found, in all investigated samples.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Temperature-programmed desorption of n-hexane from hydrated HZSM-5 and NH(4)ZSM-5 zeolites",
pages = "238-233",
number = "1",
volume = "84",
doi = "10.1007/s10973-005-7160-3"
}

Dondur, V., Rakić, V., Damjanović, L., Hercigonja, R.,& Auroux, A.. (2006). Temperature-programmed desorption of n-hexane from hydrated HZSM-5 and NH(4)ZSM-5 zeolites. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 84(1), 233-238.
https://doi.org/10.1007/s10973-005-7160-3

Dondur V, Rakić V, Damjanović L, Hercigonja R, Auroux A. Temperature-programmed desorption of n-hexane from hydrated HZSM-5 and NH(4)ZSM-5 zeolites. in Journal of Thermal Analysis and Calorimetry. 2006;84(1):233-238.
doi:10.1007/s10973-005-7160-3 .

Dondur, Vera, Rakić, Vesna, Damjanović, Ljiljana, Hercigonja, Radmila, Auroux, Aline, "Temperature-programmed desorption of n-hexane from hydrated HZSM-5 and NH(4)ZSM-5 zeolites" in Journal of Thermal Analysis and Calorimetry, 84, no. 1 (2006):233-238,
https://doi.org/10.1007/s10973-005-7160-3 . .

TY  - JOUR
AU  - Milojević, Maja
AU  - Damjanović, Ljiljana
AU  - Dondur, Vera
AU  - Rakić, Vesna
PY  - 2006
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1152
AB  - The oxidation-reduction properties of iron cations exchanged into zeolites have been know for some time and zeolites that contain ion-exchanged iron are known to be catalytically active for several reduction-oxidation type reactions. Different methods are suited for preparing Fe-ZSM-5 catalysts like addition of iron during the hydrothermal synthesis of ZSM-5, ion exchange in the liquid phase, solid-state ion exchange, or sublimation (chemical vapor deposition) of FeCl3. The nature and local environment of iron species is strongly dependent on the synthetic route, which influences their catalytic performance. In the work presented here, Fe-ZSM-5 catalysts have been obtained from a hydrogen form of the zeolite ZSM-5, with Si/Al=15 purchased from Zeolyst International. Fe-ZSM-5 catalysts were prepared using Fe-citrate and Fe-oxalate solutions. The obtained samples were characterized by IR, TG, XRPD method and temperature programmed desorption (TPD) technique. The effect of ion exchange procedures on the activity of Fe-ZSM-5 catalysts was studied by n-hexane adsorption experiments. The main aim of this work was to evaluate and compare the influence of ion exchange procedure on the active sites for adsorption in the investigated samples.
AB  - Zeoliti koji poseduju jone gvožđa su vrlo važni katalizatori u oksidoredukcionim reakcijama, kako u gasovima, tako i u rastvorima. U ovom radu su napravljeni i okarakterisani uzorci Fe-ZSM-5 zeolita koji su sintetisani iz Fe-oksalatnog i po prvi put, Fe-citratnog rastvora. Pokazano je da stepen izmene jako zavisi od uslova sinteze i da se mehanizam izmene u prisustvu Fe-citrata i Fe-oksalata znatno razlikuje. Oba tipa uzoraka u hidratisanoj formi adsorbuju nepolarni molekul n-heksana. TPD-MS i TG rezultati ukazuju da se heksan različito vezuje na uzorcima dobijenim iz rastvora Fe-citrata u odnosu na uzorke dobijene iz Feoksalata.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika - Novi materijali
T1  - Characterization and activity of Fe-ZSM-5 catalysts prepared by ion exchange procedure in Fe-citrate and Fe-oxalate solutions
T1  - Karakterizacija Fe-ZSM-5 katalizatora dobijenog jonskom izmenom u rastvorima Fe-citrata i Fe-oksalata
EP  - 13
IS  - 1
SP  - 7
VL  - 15
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1152
ER  - 

@article{
author = "Milojević, Maja and Damjanović, Ljiljana and Dondur, Vera and Rakić, Vesna",
year = "2006",
abstract = "The oxidation-reduction properties of iron cations exchanged into zeolites have been know for some time and zeolites that contain ion-exchanged iron are known to be catalytically active for several reduction-oxidation type reactions. Different methods are suited for preparing Fe-ZSM-5 catalysts like addition of iron during the hydrothermal synthesis of ZSM-5, ion exchange in the liquid phase, solid-state ion exchange, or sublimation (chemical vapor deposition) of FeCl3. The nature and local environment of iron species is strongly dependent on the synthetic route, which influences their catalytic performance. In the work presented here, Fe-ZSM-5 catalysts have been obtained from a hydrogen form of the zeolite ZSM-5, with Si/Al=15 purchased from Zeolyst International. Fe-ZSM-5 catalysts were prepared using Fe-citrate and Fe-oxalate solutions. The obtained samples were characterized by IR, TG, XRPD method and temperature programmed desorption (TPD) technique. The effect of ion exchange procedures on the activity of Fe-ZSM-5 catalysts was studied by n-hexane adsorption experiments. The main aim of this work was to evaluate and compare the influence of ion exchange procedure on the active sites for adsorption in the investigated samples., Zeoliti koji poseduju jone gvožđa su vrlo važni katalizatori u oksidoredukcionim reakcijama, kako u gasovima, tako i u rastvorima. U ovom radu su napravljeni i okarakterisani uzorci Fe-ZSM-5 zeolita koji su sintetisani iz Fe-oksalatnog i po prvi put, Fe-citratnog rastvora. Pokazano je da stepen izmene jako zavisi od uslova sinteze i da se mehanizam izmene u prisustvu Fe-citrata i Fe-oksalata znatno razlikuje. Oba tipa uzoraka u hidratisanoj formi adsorbuju nepolarni molekul n-heksana. TPD-MS i TG rezultati ukazuju da se heksan različito vezuje na uzorcima dobijenim iz rastvora Fe-citrata u odnosu na uzorke dobijene iz Feoksalata.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika - Novi materijali",
title = "Characterization and activity of Fe-ZSM-5 catalysts prepared by ion exchange procedure in Fe-citrate and Fe-oxalate solutions, Karakterizacija Fe-ZSM-5 katalizatora dobijenog jonskom izmenom u rastvorima Fe-citrata i Fe-oksalata",
pages = "13-7",
number = "1",
volume = "15",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1152"
}

Milojević, M., Damjanović, L., Dondur, V.,& Rakić, V.. (2006). Characterization and activity of Fe-ZSM-5 catalysts prepared by ion exchange procedure in Fe-citrate and Fe-oxalate solutions. in Tehnika - Novi materijali
Savez inženjera i tehničara Srbije, Beograd., 15(1), 7-13.
https://hdl.handle.net/21.15107/rcub_agrospace_1152

Milojević M, Damjanović L, Dondur V, Rakić V. Characterization and activity of Fe-ZSM-5 catalysts prepared by ion exchange procedure in Fe-citrate and Fe-oxalate solutions. in Tehnika - Novi materijali. 2006;15(1):7-13.
https://hdl.handle.net/21.15107/rcub_agrospace_1152 .

Milojević, Maja, Damjanović, Ljiljana, Dondur, Vera, Rakić, Vesna, "Characterization and activity of Fe-ZSM-5 catalysts prepared by ion exchange procedure in Fe-citrate and Fe-oxalate solutions" in Tehnika - Novi materijali, 15, no. 1 (2006):7-13,
https://hdl.handle.net/21.15107/rcub_agrospace_1152 .

TY  - JOUR
AU  - Dondur, Vera
AU  - Rakić, Vesna
AU  - Damjanović, Ljiljana
AU  - Auroux, Aline
PY  - 2005
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1014
AB  - This review summarizes some of the recently published results concerning the acid sites in the zeolites ZSM-5 and Y studied by temperature-programmed desorption (TPD) and adsorption calorimetry using different probe molecules NH3, CO, N2O and n-hexane. For the first time it has been shown that the acid sites in hydrated zeolites are accessible for n-hexane adsorption.
AB  - U ovom radu je prikazan pregled ispitivanja kiselih aktivnih centara kod zeolita ZSM-5 i Y temperaturski programiranom desorpcijom (TPD) i adsorpcionom mikrokalorimetrijom uz korišćenje različitih probnih molekula: NH3, CO, N2O i n-heksana. Prvi put je pokazana adsorpcija n-heksana na kiselim centrima hidratisanih zeolita.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Comparative study of the active sites in zeolites by different probe molecules
T1  - Uporedno ispitivanje aktivnih centara zeolita različitim probnim molekulima
EP  - 474
IS  - 3
SP  - 457
VL  - 70
DO  - 10.2298/JSC0503457D
ER  - 

@article{
author = "Dondur, Vera and Rakić, Vesna and Damjanović, Ljiljana and Auroux, Aline",
year = "2005",
abstract = "This review summarizes some of the recently published results concerning the acid sites in the zeolites ZSM-5 and Y studied by temperature-programmed desorption (TPD) and adsorption calorimetry using different probe molecules NH3, CO, N2O and n-hexane. For the first time it has been shown that the acid sites in hydrated zeolites are accessible for n-hexane adsorption., U ovom radu je prikazan pregled ispitivanja kiselih aktivnih centara kod zeolita ZSM-5 i Y temperaturski programiranom desorpcijom (TPD) i adsorpcionom mikrokalorimetrijom uz korišćenje različitih probnih molekula: NH3, CO, N2O i n-heksana. Prvi put je pokazana adsorpcija n-heksana na kiselim centrima hidratisanih zeolita.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Comparative study of the active sites in zeolites by different probe molecules, Uporedno ispitivanje aktivnih centara zeolita različitim probnim molekulima",
pages = "474-457",
number = "3",
volume = "70",
doi = "10.2298/JSC0503457D"
}

Dondur, V., Rakić, V., Damjanović, L.,& Auroux, A.. (2005). Comparative study of the active sites in zeolites by different probe molecules. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 70(3), 457-474.
https://doi.org/10.2298/JSC0503457D

Dondur V, Rakić V, Damjanović L, Auroux A. Comparative study of the active sites in zeolites by different probe molecules. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2005;70(3):457-474.
doi:10.2298/JSC0503457D .

Dondur, Vera, Rakić, Vesna, Damjanović, Ljiljana, Auroux, Aline, "Comparative study of the active sites in zeolites by different probe molecules" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 70, no. 3 (2005):457-474,
https://doi.org/10.2298/JSC0503457D . .