Effect of Ag Loading on the Adsorption/Desorption Properties of ZSM-5 towards Toluene | Sciact - CRIS-system of Boreskov Institute of Catalysis

Effect of Ag Loading on the Adsorption/Desorption Properties of ZSM-5 towards Toluene Full article

Journal

Reaction Kinetics, Mechanisms and Catalysis
ISSN: 1878-5190 , E-ISSN: 1878-5204

Output data

Year: 2016, Volume: 119, Number: 2, Pages: 629-640 Pages count : 12 DOI: 10.1007/s11144-016-1060-3

Tags

Adsorption/desorption, Ag–ZSM-5, Cold-start, DFT method, Silver clusters, Toluene

Authors

Temerev Victor L. ¹ , Vedyagin Aleksey A. ^2,3 , Afonasenko Tatyana N. ¹ , Iost Kristina N. ¹ , Kotolevich Yulia S. ¹ , Baltakhinov Vladimir P. ² , Tsyrulʹnikov Pavel G. ¹

Affiliations

1	Institute of Hydrocarbon Processing SB RAS, Neftezavodskaya St., 54, Omsk, Russia 644040
2	Boreskov Institute of Catalysis SB RAS, Pr. Ac. Lavrentieva, 5, Novosibirsk, Russia 630090
3	National Research Tomsk Polytechnic University, Lenin Av., 30, Tomsk, Russia 634050

Funding (1)

General Motors Corporation

A series of Ag–ZSM-5 samples with different Ag loading (0–10 wt%) was prepared via ion exchange. All samples were characterized by similar adsorption behavior towards toluene vapors. The concentration of Ag as well as the nature of Ag species were found to affect strongly the strength of toluene adsorption thus resulting in different profiles of temperature programmed desorption. The water vapors were shown to have a negative effect on adsorption properties of low Ag samples. It was suggested that the increase of Ag loading leads to the appearance of Agnδ+ (n = 2–8) clusters instead of monoatomic Ag+ sites predominantly existed in the case of the samples with low silver loading. It was found experimentally and explained theoretically by means of DFT calculations that these clusters exceed the monoatomic species by the strength of toluene adsorption even in the presence of water vapors. At the same time, SiO2/Al2O3 ratio in Ag–ZSM-5 samples was found to have no significant effect on adsorption/desorption properties of the zeolites.

Temerev V.L. , Vedyagin A.A. , Afonasenko T.N. , Iost K.N. , Kotolevich Y.S. , Baltakhinov V.P. , Tsyrulʹnikov P.G.
Effect of Ag Loading on the Adsorption/Desorption Properties of ZSM-5 towards Toluene
Reaction Kinetics, Mechanisms and Catalysis. 2016. V.119. N2. P.629-640. DOI: 10.1007/s11144-016-1060-3 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jun 28, 2016
Accepted:	Jul 28, 2016
Published online:	Aug 3, 2016
Published print:	Dec 1, 2016

Web of science:	WOS:000388189000019
Scopus:	2-s2.0-84982840842
Elibrary:	29465645
Chemical Abstracts:	2016:1285503
OpenAlex:	W2505587904

DB	Citing
Web of science	21
Scopus	24
Elibrary	24
OpenAlex	23