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

Authors
Tian, HJ Zhang, T Sun, XY Liang, DB Lin, LW
Citation
Hj. Tian et al., Performance and deactivation of Ir/gamma-Al2O3 catalyst in the hydrogen peroxide monopropellant thruster, APP CATAL A, 210(1-2), 2001, pp. 55-62
Citations number
29
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
APPLIED CATALYSIS A-GENERAL
ISSN journal
0926860X → ACNP
Volume
210
Issue
1-2
Year of publication
2001
Pages
55 - 62
Database
ISI
SICI code
0926-860X(20010309)210:1-2<55:PADOIC>2.0.ZU;2-E
Abstract
The performance of Ir/gamma -Al2O3 catalyst for the decomposition of high c oncentration hydrogen peroxide was investigated in a monopropellant thruste r. The changes of ignition delay (t(0)), chamber pressure (P-c) and catalys t bed temperature (T-c) with the numbers of startup-shutdown cycles were pr oved to be effective indicators of catalyst bed efficiency. The fresh catal yst and the deactivated catalyst were characterized with H-2-TPR, XRD and X PS. It was found that catalyst oxidation and surface Sn poisoning are the m ajor reasons of catalyst deactivation. (C) 2001 Elsevier Science B.V. All r ights reserved.