An efficient ruthenium catalyst for selective hydrogenation of ortho-chloronitrobenzene prepared via assembling ruthenium and tin oxide nanoparticles

被引：139

作者：

Zuo, BJ

Wang, Y ^{[1
]}

Wang, QL

Zhang, JL

Wu, NZ

Peng, LD

Gui, LL

Wang, XD

Wang, RM

Yu, DP

机构：

[1] Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China

[2] Shandong Univ, Dept Chem, Jinan 250100, Peoples R China

[3] Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China

来源：

JOURNAL OF CATALYSIS | 2004年 / 222卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ruthenium; nanoparticles; tin dioxide sol; gel; catalyst; hydrogenation; ortho-chloronitrobenzene;

D O I：

10.1016/j.jcat.2003.12.007

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：

A Ru/SnO2 catalyst was prepared by capturing "unprotected" Ru nanoclusters on SnO2 colloidal particles via electrostatic interaction followed by gelating the obtained complex sol by adjusting its pH value to 7. The assembled Ru/Sn02 catalyst performed excellently in selectively hydrogenating ortho-chloronitrobenzene to the corresponding o-chloroaniline, the catalytic activity surpassing that of previously reported Ru catalysts and the selectivity for ortho-chloroaniline in agreement with the best results reported so far on a colloidal Ru catalyst. Obvious promotional effects of the SnO2 support on both the catalytic activity and the selectivity were observed for the first time. A decrease of the reactivity of the C-Cl bond of o-chloroaniline over the present catalyst is one of the predominant reasons for the high selectivity at complete conversion. The catalyst structure was characterized by STEM, XPS, BET, and XRD. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：493 / 498

页数：6

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