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MgAPO-5-supported Pt–Pb-based novel catalyst for the hydrogenation of nitrobenzene to p-aminophenol

Paper ID Volume ID Publish Year Pages File Format Full-Text
50613 46804 2012 5 PDF Available
Title
MgAPO-5-supported Pt–Pb-based novel catalyst for the hydrogenation of nitrobenzene to p-aminophenol
Abstract

A series of MgAPO-5-supported Pt or bimetallic Pt–Pb catalysts of various Pt loadings were prepared for the hydrogenation of nitrobenzene (NB) to p-aminophenol (PAP). The structural modification and changes in the electronic properties of the catalysts were analyzed using temperature-programmed desorption of hydrogen, high-resolution transmission electron microscopy, and diffuse reflectance infrared Fourier transformation spectroscopy of the adsorbed carbon monoxide. Results show that Pb doping in Pt/MgAPO-5 catalyst decreases the hydrogenation rate of NB and phenylhydroxylamine simultaneously and increases PAP selectivity greatly. A possible reason for the improvement in the PAP selectivity of the Pb–Pt/MgAPO-5 is the increase in electron density of the Pt sites caused by the interaction of Pb and Pt. The decreased rate of NB hydrogenation over the modified Pb–Pt/MgAPO-5 catalyst can be improved considerably by increasing the reaction temperature or hydrogen pressure while maintaining a high PAP selectivity.

► Bifunctional catalyst was used for hydrogenation of nitrobenzene to p-aminophenol. ► Lead doping in the Pt/MgAPO-5 catalyst results in the increase of PAP selectivity. ► The increase in electron density of Pt is favorable for the production of PAP.

Keywords
p-Aminophenol; Nitrobenzene hydrogenation; Pt–Pb based catalyst; MgAPO-5 support; Bifunctional catalyst
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MgAPO-5-supported Pt–Pb-based novel catalyst for the hydrogenation of nitrobenzene to p-aminophenol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 24, 5 July 2012, Pages 109–113
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us