Getter materials for cracking ammonia

Details Getter materials for cracking ammonia Getter materials for cracking ammonia

1997-08-27

1999-11-02

Langel, Wayne

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

123 3, 423351, 4236582, 429 19, 429 20, C01B 304, F02B 4308, H01M 804, H01M 818

Patent

active

059767235

ABSTRACT:
A method is provided for cracking ammonia to produce hydrogen. The method includes the steps of passing ammonia over an ammonia-cracking catalyst which is an alloy including (1) alloys having the general formula Zr.sub.1-x Ti.sub.x M.sub.1 M.sub.2, wherein M.sub.1 and M.sub.2 are selected independently from the group consisting of Cr, Mn, Fe, Co, and Ni, and x is between about 0.0 and about 1.0 inclusive; and between about 20% and about 50% Al by weight. In another aspect, the method of the invention is used to provide methods for operating hydrogen-fueled internal combustion engines and hydrogen fuel cells. In still another aspect, the present invention provides a hydrogen-fueled internal combustion engine and a hydrogen fuel cell including the above-described ammonia-cracking catalyst.

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V.P. Georgiev, et al., "Properties and Structure of a Catalyst for Dissociation of Ammonia", Poroshkovaga Nelallugia v.7 1989. Plenum Publishing Corporation, 1989.
J.D. Baker, et al., "Tritium purification via zirconium-manganese-iron alloy getter St 909 in flow processes", J. Vac. Sci. Technol. A 12(2), Mar./Apr. 1994, american Vacuum Society, 1994.
Theodore A. Brabbs, "Catalytic Decomposition of Methanol for Onboard Hydrogen Generation", NASA technical Paper 1247, Jun. 1976.

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