Effect of Cr and Mo on Vapor-Phase Hydrogenation Catalysts Cu/SiO2 for Nitrobenzene

Chinese Journal of Applied Chemistry ›› 1997, Vol. 0 ›› Issue (2): 57-59.

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Effect of Cr and Mo on Vapor-Phase Hydrogenation Catalysts Cu/SiO₂ for Nitrobenzene

Fang Xiangming¹, Li Fengyi¹, Xia Kejiang², Qing Zhong²

1. Institute of Modern Applied Chemistry, Nanchang University, Nanchang 330047;
2. Jiangxi OAI Gemeinsames Institut, Nanchang

Received:1996-08-02 Revised:1996-11-18 Published:1997-04-10 Online:1997-04-10

Abstract

Abstract: Cu/SiO₂ catalysts modified by Cr₂O₃ and MoO₃ have been characterized with a continuous fixed bed reactor. The influence of Cr₂O₃ and MoO₃ on the surface properties and active site of catalysts has also been studied with TPR, XPS and XRD. The results show that catalytic properties of catalysts modified by Cr and Mo are improved remarkably and Cr₂O₃ and MoO₃ in the catalysts have the property of donating electrons towards Cu particles. Adding proper amounts of Cr, Mo to catalysts can increase the dispersity of Cu particles and the stability of catalysts.

Key words: nitrobenzene, phenylamine, hydrogenation catalyst

Fang Xiangming, Li Fengyi, Xia Kejiang, Qing Zhong. Effect of Cr and Mo on Vapor-Phase Hydrogenation Catalysts Cu/SiO₂ for Nitrobenzene[J]. Chinese Journal of Applied Chemistry, 1997, 0(2): 57-59.

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Effect of Cr and Mo on Vapor-Phase Hydrogenation Catalysts Cu/SiO₂ for Nitrobenzene

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