Compositions – Organic luminescent material containing compositions – Scintillating or lasing compositions
Patent
1973-07-23
1976-12-14
Schafer, Richard E.
Compositions
Organic luminescent material containing compositions
Scintillating or lasing compositions
423 19, 423 59, 423 75, 423261, 423325, G21C 1942
Patent
active
039974650
ABSTRACT:
Process for dehalogenation of particulate compositions containing halide impurities including metallic oxides and metallic halides such as metallic fluorides to produce metallic oxides by contacting the compositions in a heated atmosphere containing vaporized alcohol. A second gas including inert gases and active dehalogenating gases can be mixed with the vaporized alcohol. A preferred practice has agitation of the particulate compositions containing halide impurities during the dehalogenation process. The metallic oxide produced by dehalogenation can be freed from any hydrocarbon residues where desired by a subsequent heating step in a reducing atmosphere. The halide ions from the dehalogenation can be recovered as an acid by passing the dehalogenation atmosphere through water. A preferred practice of this invention uses propyl alcohol as no hydrocarbon residues are found in the dehalogenated powder.
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Brigham Donald A.
Grossman Leonard N.
General Electric Company
James, Jr. Ivor J.
Laub Sam E.
Schafer Richard E.
Turner Samuel E.
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