Palladium core-porous silica shell-nanoparticles for catalyzing the hydrogenation of 4-carboxybenzaldehyde

被引：60

作者：

Li, Kuo-Tseng ^{[1
]}

Hsu, Ming-Hao ^{[1
]}

Wang, Kai ^{[2
]}

机构：

[1] Tunghai Univ, Dept Chem Engn, Taichung 40704, Taiwan

[2] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu, Taiwan

来源：

CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 13期

关键词：

hydrogenation catalysts; Pd@SiO2; core-shell-nanoparticles; 4-carboxy-benzaldehyde; porous shell structure;

D O I：

10.1016/j.catcom.2008.05.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pd@SiO2 core-shell-particles were prepared by coating silica onto the surface of Pd-polyvinylpyrrolidone (PVP) colloids, according to the Stober method. These particles were characterized with SEM, TEM, nitrogen adsorption/desorption, XRD, CO chemisorption, and were used to catalyze the hydrogenation of 4-carboxybenzaldehyde (4-CBA) to p-toluic acid (PT). The maximum PT yield (around 99%) occurred at 160-175 degrees C, which was much lower than the temperature (250-270 degrees C) used in the commercial terephthalic acid refining process (with a Pd/C catalyst). (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2257 / 2260

页数：4

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