Performance and deactivation of Ir/γ-Al2O3 catalyst in the hydrogen peroxide monopropellant thruster

被引：59

作者：

Tian, HJ ^{[1
]}

Zhang, T ^{[1
]}

Sun, XY ^{[1
]}

Liang, DB ^{[1
]}

Lin, LW ^{[1
]}

机构：

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

来源：

APPLIED CATALYSIS A-GENERAL | 2001年 / 210卷 / 1-2期

关键词：

Ir/gamma-Al2O3; monopropellant thruster; deactivation; hydrogen peroxide;

D O I：

10.1016/S0926-860X(00)00829-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The performance of Ir/gamma -Al2O3 catalyst for the decomposition of high concentration hydrogen peroxide was investigated in a monopropellant thruster. The changes of ignition delay (t(0)), chamber pressure (P-c) and catalyst bed temperature (T-c) with the numbers of startup-shutdown cycles were proved to be effective indicators of catalyst bed efficiency. The fresh catalyst and the deactivated catalyst were characterized with H-2-TPR, XRD and XPS. It was found that catalyst oxidation and surface Sn poisoning are the major reasons of catalyst deactivation. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：55 / 62

页数：8

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