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Liquid-phase hydrogenation of o-chloronitrobenzene over supported nickel catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
52845 46890 2007 6 PDF Available
Title
Liquid-phase hydrogenation of o-chloronitrobenzene over supported nickel catalysts
Abstract

The effect of supports (SiO2, ZrO2, TiO2 and Al2O3) on the performance of nickel catalysts for the hydrogenation of o-chloronitrobenzene was investigated. It was found that the supports strongly influenced the catalytic performance of the catalysts, and Ni/TiO2 showed the best catalytic performance. Over Ni/TiO2, 99.9% conversion of o-chloronitrobenzene and 99.5% selectivity of o-chloroaniline were obtained at 1.5 MPa and 363 K. The good performance of Ni/TiO2 was perhaps attributed to the strong polarization of NO band induced by oxygen vacancies of TiOx which was produced by a high temperature reduction, and the NO band polarized was attacked easily by hydrogen dissociatively adsorbed on the nickel particles.

Keywords
Hydrogenation; o-Chloronitrobenzene; o-Chloroaniline; Supports
First Page Preview
Liquid-phase hydrogenation of o-chloronitrobenzene over supported nickel catalysts
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 3, March 2007, Pages 345–350
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis