Process for purifying hydrogen fluoride

Details Process for purifying hydrogen fluoride Process for purifying hydrogen fluoride

1989-11-30

1990-09-04

Russel, Jeffrey E.

Chemistry of inorganic compounds

Halogen or compound thereof

Hydrogen halide

203 31, 210911, 210758, C01B 719, C01G 2800, B01D 334

Patent

active

049543300

ABSTRACT:
A process for preparing hydrogen fluoride involving treating anhydrous hydrogen fluoride containing primarily trivalent arsenic impurities with an effective amount of chromium (VI) oxide (i.e., CrO.sub.3) and oxygen such as to oxidize substantially all of the trivalent arsenic to pentavalent arsenic (i.e., As.sup.+3 .fwdarw.As.sup.+5) followed by separation and recovery (e.g., by distillation) of purified anhydrous hydrogen fluoride.

REFERENCES:
patent: 2777754 (1957-01-01), Weinmayr
patent: 3166379 (1965-01-01), Bradley et al.
patent: 3663382 (1972-05-01), Garris
patent: 3687622 (1972-08-01), Garris
patent: 3689370 (1972-09-01), Osaka et al.
patent: 4032621 (1977-06-01), Meadows
patent: 4083941 (1978-04-01), Jayawant et al.
patent: 4491570 (1985-01-01), Wheaton et al.
patent: 4668497 (1987-05-01), Miki
patent: 4756899 (1988-07-01), Jenczewski et al.
Lehms et al., Chem. Abs. 109:76171W "Method for the Manufacture of High-Purity Hydrofluoric Acid".

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