Effect of isolated palladium atoms on the performance of PdAg/Al2O3 catalysts for the selective hydrogenation of acetylene

Effect of isolated palladium atoms on the performance of PdAg/Al2O3 catalysts for the selective hydrogenation of acetylene Full article

Journal

Russian Chemical Bulletin
ISSN: 1573-9171 , E-ISSN: 1066-5285

Output data

Year: 2024, Volume: 73, Number: 5, Pages: 1189-1196 Pages count : 8 DOI: 10.1007/s11172-024-4234-6

Authors

Markov P.V. ¹ , Baeva G.N. ¹ , Smirnova N.S. ¹ , Vaulina A.E. ¹ , Melnikov D.P. ² , Mashkovsky I.S. ¹

Affiliations

1	N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991, Moscow, Russian Federation
2	Gubkin Russian State University of Oil and Gas (National Research University), 65 Leninsky prosp., 119991, Moscow, Russian Federation

Egg-shell catalysts PdAg/Al2O3 with a molar ratio of Ag: Pd ranging from 0.5 to 10 were synthesized in order to study the gas-phase hydrogenation of acetylene. The results obtained by IR spectroscopy of adsorbed CO and transmission electron microscopy confirm the assumption that a catalyst with an equimolar ratio Ag: Pd = 1 contains a substitutional solid solution, while at a ratio of Ag: Pd = 10 single-atom Pd1 sites, isolated from each other by silver atoms are formed. The results presented in this work demonstrate that the transformation of the active sites from the substitutional solid solution structure to the single-atom arrangement entails a considerable increase in selectivity toward the formation of ethylene.

Markov P.V. , Baeva G.N. , Smirnova N.S. , Vaulina A.E. , Melnikov D.P. , Mashkovsky I.S.
Effect of isolated palladium atoms on the performance of PdAg/Al2O3 catalysts for the selective hydrogenation of acetylene
Russian Chemical Bulletin. 2024. V.73. N5. P.1189-1196. DOI: 10.1007/s11172-024-4234-6 WOS Scopus OpenAlex

Web of science:	WOS:001252371600006
Scopus:	2-s2.0-85196627945
OpenAlex:	W4399897819

DB	Citing
OpenAlex	5
Scopus	5
Web of science	5