A study of the adsorption thermodynamics of n-hexane on ion-exchanged X zeolites
Termodinamika adsorpcije n-heksana na jonski izmenjenim X zeolitima
Апстракт
In this work, the free energy changes and entropy changes of adsorption of n-hexane on zeolites of the MxNa87-2xX (M=Co,Ni,Zn,Cd) type were determined using their isosteric sorption heats. It was found that the exchange of Na ions in NaX with bivalent cations (Co, Ni, Zn, Cd) significantly alters the adsorption characteristics of NaX zeolite. The free energy changes and entropy changes of n-hexane adsorption were dependent on the surface coverage and on the nature of the charge-balancing cation. The specific influence of the exchanged cations on the free energy changes and entropy changes of sorption of n-hexane originates from the size, location and electronic configuration of the cation.
U ovom radu su određene promene slobodne energije i promena entropije adsorpcije n-heksana na zeolitima tipa MxNa87-2xX (M=Co,Ni,Zn,Cd) na osnovu izosternih toplota sorpcije. Pokazano je da izmena Na+ jona u NaX zeolitu dvovalentnim katjonima (Co,Ni,Zn,Cd) značajno menja adsorpcione karakteristike NaX zeolita. Takođe je utvrđeno da promena slobodne energije i promena entropije adsorpcije n-heksana zavisi i od stepena pokrivenosti površine zeolita.
Кључне речи:
X zeolite / n-hexane / adsorptionИзвор:
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 2005, 70, 12, 1409-1418Издавач:
- Srpsko hemijsko društvo, Beograd
DOI: 10.2298/JSC0512409H
ISSN: 0352-5139
WoS: 000235782500005
Scopus: 2-s2.0-31544454437
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Hercigonja, Radmila AU - Dondur, Vera AU - Rakić, Vesna PY - 2005 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/1098 AB - In this work, the free energy changes and entropy changes of adsorption of n-hexane on zeolites of the MxNa87-2xX (M=Co,Ni,Zn,Cd) type were determined using their isosteric sorption heats. It was found that the exchange of Na ions in NaX with bivalent cations (Co, Ni, Zn, Cd) significantly alters the adsorption characteristics of NaX zeolite. The free energy changes and entropy changes of n-hexane adsorption were dependent on the surface coverage and on the nature of the charge-balancing cation. The specific influence of the exchanged cations on the free energy changes and entropy changes of sorption of n-hexane originates from the size, location and electronic configuration of the cation. AB - U ovom radu su određene promene slobodne energije i promena entropije adsorpcije n-heksana na zeolitima tipa MxNa87-2xX (M=Co,Ni,Zn,Cd) na osnovu izosternih toplota sorpcije. Pokazano je da izmena Na+ jona u NaX zeolitu dvovalentnim katjonima (Co,Ni,Zn,Cd) značajno menja adsorpcione karakteristike NaX zeolita. Takođe je utvrđeno da promena slobodne energije i promena entropije adsorpcije n-heksana zavisi i od stepena pokrivenosti površine zeolita. PB - Srpsko hemijsko društvo, Beograd T2 - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY T1 - A study of the adsorption thermodynamics of n-hexane on ion-exchanged X zeolites T1 - Termodinamika adsorpcije n-heksana na jonski izmenjenim X zeolitima EP - 1418 IS - 12 SP - 1409 VL - 70 DO - 10.2298/JSC0512409H ER -
@article{ author = "Hercigonja, Radmila and Dondur, Vera and Rakić, Vesna", year = "2005", abstract = "In this work, the free energy changes and entropy changes of adsorption of n-hexane on zeolites of the MxNa87-2xX (M=Co,Ni,Zn,Cd) type were determined using their isosteric sorption heats. It was found that the exchange of Na ions in NaX with bivalent cations (Co, Ni, Zn, Cd) significantly alters the adsorption characteristics of NaX zeolite. The free energy changes and entropy changes of n-hexane adsorption were dependent on the surface coverage and on the nature of the charge-balancing cation. The specific influence of the exchanged cations on the free energy changes and entropy changes of sorption of n-hexane originates from the size, location and electronic configuration of the cation., U ovom radu su određene promene slobodne energije i promena entropije adsorpcije n-heksana na zeolitima tipa MxNa87-2xX (M=Co,Ni,Zn,Cd) na osnovu izosternih toplota sorpcije. Pokazano je da izmena Na+ jona u NaX zeolitu dvovalentnim katjonima (Co,Ni,Zn,Cd) značajno menja adsorpcione karakteristike NaX zeolita. Takođe je utvrđeno da promena slobodne energije i promena entropije adsorpcije n-heksana zavisi i od stepena pokrivenosti površine zeolita.", publisher = "Srpsko hemijsko društvo, Beograd", journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY", title = "A study of the adsorption thermodynamics of n-hexane on ion-exchanged X zeolites, Termodinamika adsorpcije n-heksana na jonski izmenjenim X zeolitima", pages = "1418-1409", number = "12", volume = "70", doi = "10.2298/JSC0512409H" }
Hercigonja, R., Dondur, V.,& Rakić, V.. (2005). A study of the adsorption thermodynamics of n-hexane on ion-exchanged X zeolites. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY Srpsko hemijsko društvo, Beograd., 70(12), 1409-1418. https://doi.org/10.2298/JSC0512409H
Hercigonja R, Dondur V, Rakić V. A study of the adsorption thermodynamics of n-hexane on ion-exchanged X zeolites. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2005;70(12):1409-1418. doi:10.2298/JSC0512409H .
Hercigonja, Radmila, Dondur, Vera, Rakić, Vesna, "A study of the adsorption thermodynamics of n-hexane on ion-exchanged X zeolites" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 70, no. 12 (2005):1409-1418, https://doi.org/10.2298/JSC0512409H . .