Size-controlled Pd Nanoparticles Supported onα-Al2O3 as Heterogeneous Catalyst for Selective Hydrogenation of Acetylene

Size-controlled Pd nanoparticles （PdNPs） were synthesized in aqueous solution, using sodium car-boxymethyl cellulose as the stabilizer. Size-controlled PdNPs were supported onα-Al2O3 by the incipient wetness impregnation method. The PdNPs onα-Al2O3 support were in a narrow particle size distribution...

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Published inChinese journal of chemical engineering Vol. 22; no. 5; pp. 516 - 521
Main Author 张火利 杨元一 戴伟 鲁树亮 于海波 吉媛媛
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2014
Subjects
acetylene hydrogenation
Pd nanoparticles
sodium carboxymethyl cellulose
α-Al2O3
乙炔
多相催化剂
尺寸控制
工业应用前景
粒度分布
选择性加氢
钯纳米粒子
acetylene hydrogenation
Pd nanoparticles
sodium carboxymethyl cellulose
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ISSN1004-9541
2210-321X
DOI10.1016/S1004-9541(14)60070-7

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Summary:Size-controlled Pd nanoparticles （PdNPs） were synthesized in aqueous solution, using sodium car-boxymethyl cellulose as the stabilizer. Size-controlled PdNPs were supported onα-Al2O3 by the incipient wetness impregnation method. The PdNPs onα-Al2O3 support were in a narrow particle size distribution in the range of 1-6 nm. A series of PdNPs/α-Al2O3 catalysts were used for the selective hydrogenation of acetylene in ethylene-rich stream. The results show that PdNPs/α-Al2O3 catalyst with 0.03%（by mass） Pd loading is a very effective and sta-ble catalyst. With promoter Ag added, ethylene selectivity is increased from 41.0%to 63.8%at 100 ＆#176;C. Comparing with conventional Pd-Ag/α-Al2O3 catalyst, PdNPs-Ag/α-Al2O3 catalyst has better catalytic performance in acety-lene hydrogenation and shows good prospects for industrial application.
Bibliography:ZHANG Huoli , YANG Yuanyi, DAI Wei , LU Shuliang , YU Haibo , JI Yuanyuan （1Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China; 2 Sinopec Beijing Research Institute of Chemical Industry, Beijing 100013, China）
Size-controlled Pd nanoparticles （PdNPs） were synthesized in aqueous solution, using sodium car-boxymethyl cellulose as the stabilizer. Size-controlled PdNPs were supported onα-Al2O3 by the incipient wetness impregnation method. The PdNPs onα-Al2O3 support were in a narrow particle size distribution in the range of 1-6 nm. A series of PdNPs/α-Al2O3 catalysts were used for the selective hydrogenation of acetylene in ethylene-rich stream. The results show that PdNPs/α-Al2O3 catalyst with 0.03%（by mass） Pd loading is a very effective and sta-ble catalyst. With promoter Ag added, ethylene selectivity is increased from 41.0%to 63.8%at 100 ＆#176;C. Comparing with conventional Pd-Ag/α-Al2O3 catalyst, PdNPs-Ag/α-Al2O3 catalyst has better catalytic performance in acety-lene hydrogenation and shows good prospects for industrial application.
11-3270/TQ
Pd nanoparticles, sodium carboxymethyl cellulose, acetylene hydrogenation
ISSN:1004-9541
2210-321X
DOI:10.1016/S1004-9541(14)60070-7