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Ultrasound-assisted preparation of a novel Ni–B amorphous catalyst in uniform nanoparticles for p-chloronitrobenzene hydrogenation

Paper ID Volume ID Publish Year Pages File Format Full-Text
52510 46875 2007 5 PDF Available
Title
Ultrasound-assisted preparation of a novel Ni–B amorphous catalyst in uniform nanoparticles for p-chloronitrobenzene hydrogenation
Abstract

Uniform Ni–B amorphous alloy nanoparticles were prepared by ultrasound-assisted reduction of Ni(NH3)62+ with BH4- in aqueous solution and the particle size was controlled by adjusting the ultrasound power. During liquid-phase p-chloronitrobenzene hydrogenation, the as-prepared Ni–B catalyst exhibited much higher activity and better p-chloroaniline selectivity than the regular Ni–B obtained via direct reduction of Ni2+ with BH4-. The higher activity could be attributed to both higher dispersion of Ni active sites and higher intrinsic activity. The higher selectivity could be attributed to both uniform Ni–B particles with larger size and Ni active sites with higher electron density.

Keywords
Ultrasound-assisted reduction; Ni–B amorphous alloy catalyst; Uniform diameter; p-Chloronitrobenzene; Hydrogenation; p-Chloroaniline
First Page Preview
Ultrasound-assisted preparation of a novel Ni–B amorphous catalyst in uniform nanoparticles for p-chloronitrobenzene hydrogenation
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 12, December 2007, Pages 2212–2216
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis