Process for the manufacture of alkali metal hydrides in coarse p

Details Process for the manufacture of alkali metal hydrides in coarse p Process for the manufacture of alkali metal hydrides in coarse p

1973-12-05

1976-06-15

Carter, Herbert T.

Chemistry of inorganic compounds

Hydrogen or compound thereof

Binary compound

427220, C01B 604

Patent

active

039638316

ABSTRACT:
Alkali metal hydrides, obtained by reacting alkali metals in liquid form with hydrogen in the presence of alkali metal hydrides, are obtained in coarsely crystalline form by continuously introducing into the reaction vessel containing constantly agitated alkali metal hydride only so much alkali metal in liquid form which corresponds stoichiometrically to the amount of hydrogen reacted and maintaining the unreacted metal concentration at 3 weight percent or less of the pre-introduced metal hydride present. In preferred aspect, the pre-introduced metal hydride is agitated by mixing means at a circumferential velocity of 0.5 to 2 meters/second and maintained at 250.degree.-310.degree.C., to yield hydride crystals in the range of 100 to 1000 microns. The hydride thus obtained may be ground in an inert hydrocarbon mixture to a finer particle material still having a relatively low surface area and recovered as a stabilized, non-sticking, non-self ignitable alkali metal hydride product.

REFERENCES:
patent: 1796265 (1951-03-01), Freudenberg et al.
patent: 2372671 (1945-04-01), Hansley
patent: 2504927 (1950-04-01), Hansley
patent: 2513997 (1950-07-01), Gibb
patent: 3281362 (1966-10-01), DiSapio
patent: 3407089 (1968-10-01), Sampson et al.
Hurd, "Chemistry of the Hydrides," 1952, pp. 27, 30, 31.

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