Promotional effect of Pd single atoms on Au nanoparticles supported on silica for the selective hydrogenation of acetylene in excess ethylene

被引：163

作者：

Pei, Guang Xian ^{[1
,2
]}

Liu, Xiao Yan ^{[1
]}

Wang, Aiqin ^{[1
]}

Li, Lin ^{[1
]}

Huang, Yanqiang ^{[1
]}

Zhang, Tao ^{[1
]}

Lee, Jonathan W. ^{[3
]}

Jang, Ben W. L. ^{[4
]}

Mou, Chung-Yuan ^{[3
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan

[4] Texas A&M Univ Commerce, Dept Chem, Commerce, TX 75429 USA

来源：

NEW JOURNAL OF CHEMISTRY | 2014年 / 38卷 / 05期

关键词：

RAY-ABSORPTION SPECTROSCOPY; GOLD CATALYSTS; ROOM-TEMPERATURE; CO OXIDATION; PD-AG/AL2O3; CATALYSTS; C2H4; ADSORPTION; AG; CU; 1,3-BUTADIENE; PERFORMANCE;

D O I：

10.1039/c3nj01136d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A Pd single-atom alloy (SAA) structure was constructed by alloying Pd with Au supported on silica. The XRD and HRTEM results demonstrated that the addition of a small amount of Pd efficiently prevented the sintering of Au nanoparticles. The DRIFTS and EXAFS results confirmed that the Pd SAA structure was formed when the atomic ratios of Pd/Au were lower than 0.025. The Pd SAA structure exhibits a much better catalytic performance for the selective hydrogenation of acetylene in excess ethylene than the corresponding monometallic Au or Pd systems.

引用

页码：2043 / 2051

页数：9

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