Method for preparing inorganic sulfides

Details Method for preparing inorganic sulfides Method for preparing inorganic sulfides

1981-11-04

1982-09-07

Cooper, Jack

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

423561R, 423565, C09K 11465

Patent

active

043482996

ABSTRACT:
Method for preparing an inorganic sulfide material including heating at temperatures between about 800.degree. and 1200.degree. C. a mixture comprising at least one member of the group consisting of oxidic materials of calcium, strontium and combinations thereof with a reactive sulfurizing flux which yields sulfides and polysulfides upon heating until the flux melts, reacts with the oxidic material, and the mixture forms into a molten mass. Then, cooling the mass to room temperature whereby relatively water-insoluble particles of the desired sulfide material crystallize in a relatively water-soluble matrix. The sulfide material may be separated by dissolving away the matrix in water and collecting the particles of sulfide material.

REFERENCES:
patent: 996094 (1911-06-01), Koegh
patent: 2485903 (1949-10-01), Miller
patent: 2521124 (1950-09-01), Miller
patent: 3418246 (1968-12-01), Royce
patent: 3502590 (1970-03-01), Royce et al.

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