New decomposition catalysts and characterization techniques for rocket-grade hydrogen peroxide

Abstract

Traditionally, macroscopic metallic screens and coated ceramic pellets have been used as catalysts for the decomposition of hydrogen peroxide as applied to monopropellant thrusters, liquid rocket engines, and hybrid rocket systems. Catalyst activity depends on available catalytic surface area; metallic catalyst stability is generally degraded by catalyst oxidation. New approaches to forming inexpensive, high surface area decomposition catalyst packs for flightweight applications that do not suffer from oxidative degradation will be discussed. This article will also specifically discuss analytical methods for the assay of hydrogen peroxide and the precise determination of inhibitor species. The synthesis, characterization, and evaluation of high surface area catalyst beds will be discussed as compared to traditional propulsion catalysts. Finally, the effects of valence state and cation type on catalyst activity will be discussed.