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Citation: 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, 14(2): 57-59. shu

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

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

Received Date: 2 August 1996
Available Online: 18 November 1996

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.
- nitrobenzene,
- phenylamine,
- hydrogenation catalyst
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Effect of Cr and Mo on Vapor-Phase Hydrogenation Catalysts Cu/SiO2 for Nitrobenzene

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