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Supercritical Fluid Metal Halide Separation Process.

Authors
Tolley-WK; Whitehead-AG
Source
U S Pat 4 853 205 1989 Aug; :
Link
NIOSHTIC No.
10012053
Abstract
A supercritical fluid is used to selectively separate, purify, and recover metal halides. Thus, 54.5 G of a mixture containing 15.9 pct ticl4 and 84.1 pct alcl3 was placed in an autoclave and supercritical co2 at 53 deg c and 1,550 psig was passed through the mixture for approximately 30 min. Supercritical co2 carrying dissolved ticl4 was removed continuously during the 30 min and was depressurized by expanding it through a needle valve. Liquid ticl4 was collected in a flask. At the end of the test, 3.15 G of liquid had collected, containing 99.3 pct ticl4 and 0.7 pct alcl3. The solid alcl3 residue in the autoclave contained no detectable ticl4.
Publication Date
19890801
Document Type
PA;
Fiscal Year
1989
Identifying No.
PAT 4,853,205
NIOSH Division
SLRC;
Source Name
U.S. Pat. 4,853,205, Aug. 1, 1989
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division