Method for the preparation of active magnesium hydride-magnesium

Details Method for the preparation of active magnesium hydride-magnesium Method for the preparation of active magnesium hydride-magnesium

1991-10-30

1993-03-30

Konopka, Paul E.

Chemistry of inorganic compounds

Hydrogen or compound thereof

Binary compound

420900, 502526, C01B 604, C01B 300, B01J 3112

Patent

active

051982072

ABSTRACT:
A method is disclosed for the preparation of active magnesium hydride-magnesium-hydrogen storage systems, which reversibly absorb hydrogen, with addition of a catalyst for the absorption of hydrogen with the formation of hydride. Magnesium hydride particles.ltoreq.400 .mu.m in diameter are added in an amount of at least 1.2% by weight, based on the magnesium to be hydrogenated, as catalyst during the first hydrogenation to the finely divided magnesium to be hydrogenated. The hydrogenation is carried out at a temperature of .gtoreq.250.degree. C. and a pressure of 0.5 to 5 MPa. The method is carried out with intensive stirring of the material that is being reacted.

REFERENCES:
patent: 3479165 (1969-11-01), Lyon
patent: 4537761 (1985-08-01), Reed et al.
patent: 4554152 (1985-11-01), Bogdanovic

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