Purification of exhaust gases from gasoline engine using adsorption-catalytic systems. Part 1: trapping of hydrocarbons by Ag-modified ZSM-5

Purification of exhaust gases from gasoline engine using adsorption-catalytic systems. Part 1: trapping of hydrocarbons by Ag-modified ZSM-5 Full article

Journal

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

Output data

Year: 2019, Volume: 127, Number: 2, Pages: 945-959 Pages count : 15 DOI: 10.1007/s11144-019-01588-8

Tags

Cold-start, Hydrocarbon trapping, Ag-ZSM-5, CO oxidation, Prompt thermal aging procedure

Authors

Temerev V.L. ¹ , Vedyagin A.A. ^2,3 , Iost K.N. ¹ , Pirutko L.V. ² , Cherepanova S.V. ^2,4 , Kenzhin R.M. ² , Stoyanovskii V.O. ² , Trenikhin M.V. ¹ , Shlyapin D.A. ¹

Affiliations

1	Center of New Chemical Technologies, Boreskov Institute of Catalysis SB RAS, Neftezavodskaya st., 54, Omsk 644040, Russian Federation
2	Boreskov Institute of Catalysis SB RAS, pr. Ac. Lavrentieva 5, Novosibirsk 630090, Russian Federation
3	National Research Tomsk Polytechnic University, Lenin av., 30, Tomsk 634050, Russian Federation
4	National Research University-Novosibirsk State University, Pirogova str., 1, Novosibirsk 630090, Russian Federation

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

AAAA-A17-117041710086-6

In the present work, adsorptive-catalytic properties and thermal stability of the systems based on ZSM-5 zeolite and γ-Al2O3, used as a binder, were studied. The zeolite was modifed with silver, and the Ag loading used was 5 and 10 wt%. Characterization of the samples by a transmission electron microscopy has revealed that for the 5%Ag/ZSM-5 sample the predominant part of silver is represented by ionexchanged forms. The 10%Ag/ZSM-5 sample contains also silver nanoparticles and clusters on the outer zeolite surface. As it was found by means of X-ray difraction analysis, all these surface Ag species are roentgen-amorphous. Difuse refectance UV–vis spectroscopy confrms presence of the surface Ag clusters, which concentration increases after the high-temperature aging. The adsorption capacity of the samples was estimated using toluene as a model aromatic compound. The composition of the reaction mixture during the aging procedures was varied in order to elucidate the contribution of diferent silver sites to hydrocarbons sorption, their partial oxidation and oxidation of carbon monoxide.

Temerev V.L. , Vedyagin A.A. , Iost K.N. , Pirutko L.V. , Cherepanova S.V. , Kenzhin R.M. , Stoyanovskii V.O. , Trenikhin M.V. , Shlyapin D.A.
Purification of exhaust gases from gasoline engine using adsorption-catalytic systems. Part 1: trapping of hydrocarbons by Ag-modified ZSM-5
Reaction Kinetics, Mechanisms and Catalysis. 2019. V.127. N2. P.945-959. DOI: 10.1007/s11144-019-01588-8 WOS Scopus РИНЦ OpenAlex

Published online:	May 23, 2019
Published print:	Aug 1, 2019

Web of science:	WOS:000475580200026
Scopus:	2-s2.0-85068871479
Elibrary:	41618182
OpenAlex:	W2945437236

DB	Citing
Web of science	5
Scopus	8
OpenAlex	9