TY  - JOUR
AU  - Bonnetot, B.
AU  - Rakić, Vesna
AU  - Yuzhakova, T.
AU  - Guimon, C.
AU  - Auroux, Aline
PY  - 2008
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1828
AB  - The present work focuses on the combination of ceria mixed with another oxide from group III, using the sol-gel method. B2O3- Al2O3- Ga2O3- or In2O3-CeO2 mixed oxides have been prepared in order to improve the catalytic properties of these materials. The structural, textural, and surface properties of these catalysts have been fully characterized by means of a variety of techniques (Brunauer-Emmett-Teller, BET; X-ray diffraction analysis, XRD; Raman; scanning electron microscopy, SEM; thermogravimetric analysis, TG; and temperature-programmed reduction/oxidation, TPR-TPO). The highest surface area was achieved for the Al2O3-CeO2 mixed oxide. Only the fluorite structure of CeO2 was observed by XRD for all prepared mixed oxides; the presence of oxygen vacancies was proven by Raman spectroscopy. The acid-base properties were estimated by the adsorption of probe molecules (NH3 and SO2); two methods, microcalorimetry and X-ray photoelectron spectroscopy (XPS), have been employed for that purpose. All investigated mixed oxides express surface amphoteric character; however, it seems that surface basicity is more pronounced than surface acidity. The surface bacisity, which is mainly of the Bronsted type, has been found as dependent on the character of the group III metal. Red-ox properties were investigated for the In2O3-CeO2 sample, the achieved degree of reduction being 34%. TPR/TPO experiments performed up to 830 degrees C irreversibly changed the morphology and the structure of the samples, leading to the crystallization of In2O3.
PB  - Amer Chemical Soc, Washington
T2  - Chemistry of Materials
T1  - Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed oxide catalysts. 2. Preparation by sol-gel method
EP  - 1596
IS  - 4
SP  - 1585
VL  - 20
DO  - 10.1021/cm071809e
ER  - 

@article{
author = "Bonnetot, B. and Rakić, Vesna and Yuzhakova, T. and Guimon, C. and Auroux, Aline",
year = "2008",
abstract = "The present work focuses on the combination of ceria mixed with another oxide from group III, using the sol-gel method. B2O3- Al2O3- Ga2O3- or In2O3-CeO2 mixed oxides have been prepared in order to improve the catalytic properties of these materials. The structural, textural, and surface properties of these catalysts have been fully characterized by means of a variety of techniques (Brunauer-Emmett-Teller, BET; X-ray diffraction analysis, XRD; Raman; scanning electron microscopy, SEM; thermogravimetric analysis, TG; and temperature-programmed reduction/oxidation, TPR-TPO). The highest surface area was achieved for the Al2O3-CeO2 mixed oxide. Only the fluorite structure of CeO2 was observed by XRD for all prepared mixed oxides; the presence of oxygen vacancies was proven by Raman spectroscopy. The acid-base properties were estimated by the adsorption of probe molecules (NH3 and SO2); two methods, microcalorimetry and X-ray photoelectron spectroscopy (XPS), have been employed for that purpose. All investigated mixed oxides express surface amphoteric character; however, it seems that surface basicity is more pronounced than surface acidity. The surface bacisity, which is mainly of the Bronsted type, has been found as dependent on the character of the group III metal. Red-ox properties were investigated for the In2O3-CeO2 sample, the achieved degree of reduction being 34%. TPR/TPO experiments performed up to 830 degrees C irreversibly changed the morphology and the structure of the samples, leading to the crystallization of In2O3.",
publisher = "Amer Chemical Soc, Washington",
journal = "Chemistry of Materials",
title = "Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed oxide catalysts. 2. Preparation by sol-gel method",
pages = "1596-1585",
number = "4",
volume = "20",
doi = "10.1021/cm071809e"
}

Bonnetot, B., Rakić, V., Yuzhakova, T., Guimon, C.,& Auroux, A.. (2008). Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed oxide catalysts. 2. Preparation by sol-gel method. in Chemistry of Materials
Amer Chemical Soc, Washington., 20(4), 1585-1596.
https://doi.org/10.1021/cm071809e

Bonnetot B, Rakić V, Yuzhakova T, Guimon C, Auroux A. Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed oxide catalysts. 2. Preparation by sol-gel method. in Chemistry of Materials. 2008;20(4):1585-1596.
doi:10.1021/cm071809e .

Bonnetot, B., Rakić, Vesna, Yuzhakova, T., Guimon, C., Auroux, Aline, "Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed oxide catalysts. 2. Preparation by sol-gel method" in Chemistry of Materials, 20, no. 4 (2008):1585-1596,
https://doi.org/10.1021/cm071809e . .

TY  - JOUR
AU  - Yuzhakova, T.
AU  - Rakić, Vesna
AU  - Guimon, C.
AU  - Auroux, Aline
PY  - 2007
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1491
AB  - The present work is focused on the synthesis and characterization of ceria-based mixed oxides. Ceria was combined with the other oxides from group III, with the intention of improving the catalytic properties I of thus obtained materials. (B2O3, Al2O3, Ga2O3, In2O3)-CeO2 mixed oxides with a wide range of Me2O3 contents have been prepared by a coprecipitation route. The obtained solid materials have been characterized in terms of their structural, textural, and surface properties, including the acid-base and red-ox features, by a variety of techniques (BET, XRD, Raman, SEM, TG, TPR-TPO). The acid-base properties were estimated by the adsorption of probe molecules (NH3 and SOA investigated by the use of two techniques: microcalorimetry and XPS. The obtained materials exhibited satisfactory homogeneity; the highest surface areas were achieved for Al2O3-CeO2 mixed oxides. Only the fluorite structure of CeO2 was observed by XRD for all prepared mixed oxides, along with the presence of oxygen vacancies, which has been proven by Raman spectroscopy. Red-ox properties were investigated for In2O3-CeO2 samples. The degree of reduction decreased with In2O3 loading. Besides, the reduction -oxidation cycle, performed up to 830 degrees C, changed the morphology and structure of the samples irreversibly, leading to crystallization of In2O3. Among all investigated materials, only boria created significant acidity, whereas the basicity has been found to be dependent on the nature and amount of group III metal.
PB  - Amer Chemical Soc, Washington
T2  - Chemistry of Materials
T1  - Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts
EP  - 2981
IS  - 12
SP  - 2970
VL  - 19
DO  - 10.1021/cm062912r
ER  - 

@article{
author = "Yuzhakova, T. and Rakić, Vesna and Guimon, C. and Auroux, Aline",
year = "2007",
abstract = "The present work is focused on the synthesis and characterization of ceria-based mixed oxides. Ceria was combined with the other oxides from group III, with the intention of improving the catalytic properties I of thus obtained materials. (B2O3, Al2O3, Ga2O3, In2O3)-CeO2 mixed oxides with a wide range of Me2O3 contents have been prepared by a coprecipitation route. The obtained solid materials have been characterized in terms of their structural, textural, and surface properties, including the acid-base and red-ox features, by a variety of techniques (BET, XRD, Raman, SEM, TG, TPR-TPO). The acid-base properties were estimated by the adsorption of probe molecules (NH3 and SOA investigated by the use of two techniques: microcalorimetry and XPS. The obtained materials exhibited satisfactory homogeneity; the highest surface areas were achieved for Al2O3-CeO2 mixed oxides. Only the fluorite structure of CeO2 was observed by XRD for all prepared mixed oxides, along with the presence of oxygen vacancies, which has been proven by Raman spectroscopy. Red-ox properties were investigated for In2O3-CeO2 samples. The degree of reduction decreased with In2O3 loading. Besides, the reduction -oxidation cycle, performed up to 830 degrees C, changed the morphology and structure of the samples irreversibly, leading to crystallization of In2O3. Among all investigated materials, only boria created significant acidity, whereas the basicity has been found to be dependent on the nature and amount of group III metal.",
publisher = "Amer Chemical Soc, Washington",
journal = "Chemistry of Materials",
title = "Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts",
pages = "2981-2970",
number = "12",
volume = "19",
doi = "10.1021/cm062912r"
}

Yuzhakova, T., Rakić, V., Guimon, C.,& Auroux, A.. (2007). Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts. in Chemistry of Materials
Amer Chemical Soc, Washington., 19(12), 2970-2981.
https://doi.org/10.1021/cm062912r

Yuzhakova T, Rakić V, Guimon C, Auroux A. Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts. in Chemistry of Materials. 2007;19(12):2970-2981.
doi:10.1021/cm062912r .

Yuzhakova, T., Rakić, Vesna, Guimon, C., Auroux, Aline, "Preparation and characterization of Me2O3-CeO2 (Me = B, Al, Ga, In) mixed-oxide catalysts" in Chemistry of Materials, 19, no. 12 (2007):2970-2981,
https://doi.org/10.1021/cm062912r . .