Comparative EXAFS and TEM study of Pd/Sibunit and Pd-Ga/Sibunit catalysts for liquid-phase acetylene hydrogenation

被引：5
|
作者：
Smirnova N.S. [1 ]
Shlyapin D.A. [1 ]
Leont’eva N.N. [1 ]
Trenikhin M.V. [1 ]
Shitova N.B. [1 ]
Kochubey D.I. [2 ]
Tsyrul’nikov P.G. [1 ]
机构：
[1] Institute of Hydrocarbons Processing, Siberian Branch, Russian Academy of Sciences, Omsk
[2] Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk
来源：
Bulletin of the Russian Academy of Sciences: Physics | 2015年 / 79卷 / 9期
基金：
俄罗斯基础研究基金会;
关键词：
Palladium; Gallium; Gallium Oxide; Inorganic Crystal Structure Database; Liquid Phase Hydrogenation;
D O I：
10.3103/S106287381501030X
中图分类号：
学科分类号：
摘要：
The structural characteristics and catalytic properties of Pd/Sibunit and Pd-Ga/Sibunit catalysts for the liquid-phase hydrogenation of acetylene prepared via impregnation of joint alcoholic precursor solutions are studied. A surface film of gallium oxide covering the surfaces of bimetallic particles forms on a sample modified with gallium, leading to partial blocking of its active centers. This explains the lower activity and selectivity to ethylene of Pd-Ga/Sibunit catalyst, relative to Pd/Sibunit. © 2015, Allerton Press, Inc.
引用
收藏
页码：1186 / 1190
页数：4
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