Palladium phosphide nanoparticles as highly selective catalysts for the selective hydrogenation of acetylene

被引：90

作者：

Liu, Yanan ^{[1
,2
]}

McCue, Alan J. ^{[3
]}

Miao, Chenglin ^{[1
]}

Feng, Junting ^{[1
]}

Li, Dianqing ^{[1
]}

Anderson, James A. ^{[2
]}

机构：

[1] Beijing Inst Chem Technol, State Key Lab Chem Engn, Beijing 100029, Peoples R China

[2] Univ Aberdeen, Dept Engn, Mat & Chem Engn, Surface Chem & Catalysis Grp, Aberdeen AB24 3UE, Scotland

[3] Univ Aberdeen, Dept Chem, Aberdeen AB24 3UE, Scotland

来源：

JOURNAL OF CATALYSIS | 2018年 / 364卷

基金：

中国国家自然科学基金;

关键词：

Palladium phosphide; Selective hydrogenation; Alkyne; Acetylene; Ethylene; Site-isolation; GALLIUM INTERMETALLIC COMPOUNDS; ETHENE-RICH STREAMS; LI-ION BATTERIES; METAL PHOSPHIDES; FORMIC-ACID; ELECTROCATALYTIC PERFORMANCE; CU/AL2O3; CATALYSTS; CRYSTAL STRUCTURE; NICKEL PHOSPHIDE; MODIFIED PD/TIO2;

D O I：

10.1016/j.jcat.2018.06.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pd3P and PdP2 phases of ca. 4 nm particle diameter were prepared on a TiO2 support by an impregnation route. Data from the hydrogenation of acetylene under both non-competitive and competitive conditions showed that PdP2/TiO2 exhibits enhanced selectivity and stability relative to Pd3P. Furthermore, the selectivity produced over PdP2 (84% ethylene selectivity @ 100% acetylene conversion) compares favorably with recently reported materials. XPS and CO-IR measurements reveal that the incorporation of P helps to break up contiguous Pd sites. This in turn is thought to affect the adsorption and desorption of reactants/products and thus improves selectivity. This work reveals that the incorporation of P into Pd materials could be regarded as a promising approach to develop new and improved Pd-based catalyst by creating a means to control the nature of the active sites. (C) 2018 Elsevier Inc. All rights reserved.

引用

页码：406 / 414

页数：9

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