Catalyst for hydrazine decomposition

Details Catalyst for hydrazine decomposition Catalyst for hydrazine decomposition

1981-05-18

1982-09-07

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455R, 252460, 252466PT, 252470, 252472, 252473, B01J 2346, B01J 2368, B01J 2388

Patent

active

043483038

ABSTRACT:
A catalyst is provided for decomposing hydrazine base monopropellants and providing multiple hydrazine-ignition restarts. The catalyst comprises a carrier material selected from the group consisting of high surface area ceramics, and 1/2 to 8% of active iridium, ruthenium, or mixtures thereof, based on the total weight of the catalyst. The active metal is deposited primarily on the exterior surface of the carrier. A second metal catalyst can be contained primarily within the interior of the carrier.
The method of producing the catalyst comprises impregnating the carrier with an alcohol solution containing a salt of iridium, ruthenium, or a mixture thereof, to deposit the metal on the exterior surface only of the carrier. The precious metal is reduced to an active pure metal by contact with a fluid reducing agent selected from the group consisting of hydrogen and hydrogen-inert gas mixtures. A second metal catalyst can be deposited uniformly throughout the catalyst by impregnating the carrier with an aqueous solution containing a compound of the second metal catalyst.

REFERENCES:
patent: 3730909 (1973-05-01), Armstrong et al.
patent: 3846339 (1974-11-01), Blumenthal et al.
patent: 4124538 (1978-11-01), Armstrong et al.

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