Journal of Zhejiang University SCIENCE
(ISSN 1009-3095, Monthly)

2005   Vol. 6B   No. 5   p.378-381

Hydrogenation of ortho-nitrochlorobenzene on activated carbon supported platinum catalysts

JIANG Cheng-jun^†, YIN Hong, CHEN Zhi-rong

(Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China)
^†E-mail: jcj312@163.com
Received Oct. 20, 2004; revision accepted Dec. 12, 2004

Abstract: Platinum/carbon catalyst is one of the most important catalysts in hydrogenation of ortho-nitrochlorobenzene to 2,2′-dichlorohydrazobenzene. The preparation process and the supports of catalysts are studied in this paper. Raw materials and preparation procedure of the activated carbon have great influences on the compositions and surface structure of platinum/carbon catalysts. Platinum catalysts supported on activated carbon with high purity, high surface area, large pore volume and appropriate pore structure usually exhibit higher activities for hydrogenation of ortho-nitrochlorobenzene to 2,2′-dichlorohydrazobenzene. The catalyst prepared from H₂PtCl₆ with pH=3 shows greater catalytic performance than those prepared under other conditions.

Key words: Platinum/carbon catalyst, Hydrogenation, Ortho-nitrochlorobenzene, 2,2′-dichlorohydrazobenzene, Activated carbon
doi:10.1631/jzus.2005.B0378             CLC number: O643/TQ53