Revealing the Influence of Silver in Ni–Ag Catalysts on the Selectivity of Higher Olefin Synthesis from Stearic Acid


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Results on the conversion of stearic acid to olefins over Ni–Ag/γ-Al2O3 catalysts are presented. XANES and EXAFS experiments in situ and DFT calculations were applied to reveal the structure of active sites therein. It is shown that the introduction of Ag to Ni catalysts leads to an increase in the olefin yield. After a reduction in hydrogen (350°C, 3 h) alumina-supported nanoparticles of nickel sulfides and metallic Ag are formed. The role of metal hydrides formed during the reaction is extensively discussed.

Sobre autores

V. Danyushevsky

Moscow Technological University, Institute of Fine Chemical Technologies

Autor responsável pela correspondência
Email: vyadan@yandex.ru
Rússia, Moscow

V. Murzin

Deutsches Elektronen-Synchrotron (DESY)

Email: vyadan@yandex.ru
Alemanha, Hamburg

P. Kuznetsov

Moscow Technological University, Institute of Fine Chemical Technologies

Email: vyadan@yandex.ru
Rússia, Moscow

R. Shamsiev

Moscow Technological University, Institute of Fine Chemical Technologies

Email: vyadan@yandex.ru
Rússia, Moscow

E. Katsman

Moscow Technological University, Institute of Fine Chemical Technologies

Email: vyadan@yandex.ru
Rússia, Moscow

E. Khramov

National Research Center “Kurchatov Institute” (NRCKI), Kurchatov Synchrotron–Neutron Research Complex

Email: vyadan@yandex.ru
Rússia, Moscow

Y. Zubavichus

National Research Center “Kurchatov Institute” (NRCKI), Kurchatov Synchrotron–Neutron Research Complex

Email: vyadan@yandex.ru
Rússia, Moscow

A. Berenblyum

Moscow Technological University, Institute of Fine Chemical Technologies

Email: vyadan@yandex.ru
Rússia, Moscow

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