Fabrication and Catalytic Properties of Palladium Nanoparticles Deposited on a Silanized Asymmetric Ceramic Support

被引：34

作者：

Chen, Rizhi ^{[1
]}

Jiang, Yuanguo ^{[1
]}

Xing, Weihong ^{[1
]}

Jin, Wanqin ^{[1
]}

机构：

[1] Nanjing Univ Technol, State Key Lab Mat Oriented Chem Engn, Coll Chem & Chem Engn, Nanjing 210009, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2011年 / 50卷 / 08期

关键词：

DRINKING-WATER; P-AMINOPHENOL; MEMBRANE REACTORS; HYDROGENATION; NITROPHENOL; PERFORMANCE; METHYLENECYCLOHEXANE; NITROBENZENE; NITRATES; CARBON;

D O I：

10.1021/ie1022578

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We developed an improved fabrication technique for the deposition of palladium nanoparticles on a ceramic membrane support in which the support surface was silanized with ammo functional silane. In the present work, the ceramic membrane support was used for catalyst immobilization only The as-fabricated Pd-loaded ceramic membrane support was extensively characterized by ICP emission spectroscopy, XAD, FESEM, EDS, XPS, HRTEM, and TPR, and its catalytic properties were tested in the liquid-phase hydrogenation of p-nitrophenol to p-am m phenol. A comparative study was also made with palladium nanoparticles deposited on the ceramic membrane support without silanization. Higher catalytic activity and stability were observed for the palladium nanoparticles deposited on the surface-silanized ceramic membrane support. The reason proposed for the higher catalytic activity is the higher dispersion of the palladium nanoparticles. The palladium nanoparticles were loaded onto the surface-silanized ceramic membrane support with chemical bonds; thus, it was not easy for the palladium nanoparticles to detach from the silanized membrane support, and a superior catalytic stability could be obtained.

引用

页码：4405 / 4411

页数：7

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