Reverse Microemulsion Synthesis and Characterization of Pd-Ag Bimetallic Alloy Catalysts Supported on Al2O3 for Acetylene Hydrogenation

被引：0

作者：

Wei Guobin ^{[1
,2
]}

Dai Wei ^{[2
]}

Li Qian ^{[2
]}

Cao Weiliang ^{[1
]}

Zhang Jingchang ^{[1
]}

机构：

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

[2] SINOPEC, Beijing Res Inst Chem Ind, Ethylene Tech Dept, Beijing 100013, Peoples R China

来源：

CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY | 2012年 / 14卷 / 03期

关键词：

reverse microemulsion; Pd-Ag bimetallic catalyst; nanoparticle; acetylene hydrogenation; SILVER NANOPARTICLES; SELECTIVE HYDROGENATION; REDUCTION; PARTICLES; TEMPLATE;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Pd-Ag bimetallic alloy nanoparticles were synthesized by the reverse microemulsion method, and then deposited on Al2O3 to form the supported catalyst. The nanoparticles of Pd-Ag and Pd-Ag/Al2O3 samples were characterized by UV/Vis, HRTEM, EDX, XRD, and XPS. The test results indicated that Pd-Ag bimetallic alloy nanoparticles with a size of about 2 nm and a face-centered cubic (fcc) structure were formed in the measured area of microemulsion. The growth of nanopartidies was effectively limited within the droplet of micoremulsion. TEM image exhibited that the Pd-Ag alloy nanoparticles were well-dispersed on the Al2O3 support. The catalytic performance of various catalysts for selective hydrogenation of acetylene showed that a higher acetylene conversion and selectivity to ethylene upon acetylene hydrogenation was achieved on a nano-sized Pd-Ag bimetallic catalyst with a Pd/Ag alloy supported molar ratio of 1:1.5.

引用

页码：59 / 67

页数：9

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