Reverse Microemulsion Synthesis and Characterization of Pd-Ag Bimetallic Alloy Catalysts Supported on Al_2O_3 for Acetylene Hydrogenation

查看全文 作　　者：Wei [1,2]Guobin;Dai [2]Wei;Li [2]Qian;Cao [1]Weiliang;Zhang [1]Jingchang

机构地区：[1]Institute of Modern Catalysis,Beijing University of Chemical Technology,State Key Laboratory of Chemical Resource Engineering;[2]Ethylene Technique Department,Beijing Research Institute of Chemical Industry,SINOPEC

出　　处：《China Petroleum Processing & Petrochemical Technology》索引2012年第14卷第3期,共9页

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 nanoparticles 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. 关键词：反相微乳液法双金属催化剂合金催化剂乙炔加氢表征合成金纳米粒子 HRTEM

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Reverse Microemulsion Synthesis and Characterization of Pd-Ag Bimetallic Alloy Catalysts Supported on Al_2O_3 for Acetylene Hydrogenation

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