Catalytic decomposition of hydrazine over α-Mo2C/γ-Al2O3 catalysts

被引：30

作者：

Chen, XW ^{[1
]}

Zhang, T ^{[1
]}

Zheng, MY ^{[1
]}

Xia, LG ^{[1
]}

Li, T ^{[1
]}

Wu, WC ^{[1
]}

Wang, XD ^{[1
]}

Li, C ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catal, Dalian 116023, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2004年 / 43卷 / 19期

关键词：

D O I：

10.1021/ie034262w

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A series of alpha-Mo2C/gamma-Al2O3 catalysts with different Mo loadings were prepared by temperature-programmed reaction and characterized by X-ray diffraction, BET specific surface area determination, and NH3 temperature-programmed desorption. Their ability to decompose hydrazine was tested using a thruster and a microreactor. The catalytic activity for hydrazine decomposition of the fresh alpha-Mo2C/gamma-Al2O3 catalyst is higher than that of the passivated alpha-Mo2C/gamma-Al2O3 catalyst. The catalytic activity also decreased with the reaction time at 303 K, and the deactivation is mainly due to strongly adsorbed NHx species. Flushing with N-2 at 773 K recovers the activity of the catalyst. It was shown that hydrazine decomposes to NH3 and N-2 at low temperatures, and the produced NH3 dissociates into N-2 and H-2 at elevated temperatures.

引用

页码：6040 / 6047

页数：8

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