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.

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V. Danyushevsky

Moscow Technological University, Institute of Fine Chemical Technologies

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Email: vyadan@yandex.ru
俄罗斯联邦, Moscow

V. Murzin

Deutsches Elektronen-Synchrotron (DESY)

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德国, Hamburg

P. Kuznetsov

Moscow Technological University, Institute of Fine Chemical Technologies

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俄罗斯联邦, Moscow

R. Shamsiev

Moscow Technological University, Institute of Fine Chemical Technologies

Email: vyadan@yandex.ru
俄罗斯联邦, Moscow

E. Katsman

Moscow Technological University, Institute of Fine Chemical Technologies

Email: vyadan@yandex.ru
俄罗斯联邦, Moscow

E. Khramov

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

Email: vyadan@yandex.ru
俄罗斯联邦, Moscow

Y. Zubavichus

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

Email: vyadan@yandex.ru
俄罗斯联邦, Moscow

A. Berenblyum

Moscow Technological University, Institute of Fine Chemical Technologies

Email: vyadan@yandex.ru
俄罗斯联邦, Moscow

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