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Hydrogenation of nitrobenzene over palladium-supported catalysts—Effect of support

Paper ID Volume ID Publish Year Pages File Format Full-Text
42938 45948 2009 6 PDF Available
Title
Hydrogenation of nitrobenzene over palladium-supported catalysts—Effect of support
Abstract

Vapor phase hydrogenation of nitrobenzene is reported on 1 wt.% Pd supported on hydrotalcite, MgO and γ-Al2O3 catalysts. The catalysts were prepared in the laboratory using a wet impregnation method and were characterized by XRD, BET surface area, TPR, TEM, XPS and CO chemisorption studies. The conversion of nitrobenzene was studied in the temperature region of 498–573 K and compared on all the catalysts. An impressive catalytic performance of nitrobenzene conversion was observed on hydrotalcite supported Pd catalyst. CO chemisorption and TEM results prove that palladium disperses better on hydrotalcite supports when compared with other conventional supports such as MgO and γ-Al2O3, which is responsible for the high conversion of nitrobenzene.

Graphical abstractVapor phase hydrogenation of nitrobenzene is reported on 1 wt.% Pd supported on hydrotalcite, MgO and (-Al2O3 catalysts. The catalysts were prepared in the laboratory using a wet impregnation method and were characterized by XRD, BET surface area, TPR, TEM, XPS and CO chemisorption studies. The Turnover frequency for HT-supported Pd was found to be higher than on MgO and (-Al2O3 supported catalysts. Thus, hydrotalcite has been found to be an effective support for Pd catalyst, for aniline formation from nitrobenzene via hydrogenation.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Hydrotalcite; MgO; γ-Al2O3; Palladium; Hydrogenation
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Hydrogenation of nitrobenzene over palladium-supported catalysts—Effect of support
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 353, Issue 2, 1 February 2009, Pages 160–165
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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