Process and composition for purifying arsine, phosphine, ammonia

Details Process and composition for purifying arsine, phosphine, ammonia Process and composition for purifying arsine, phosphine, ammonia

1988-02-11

1988-11-01

McFarlane, Anthony

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

423219, 423299, 423352, 502400, 502401, 502402, 502414, 502415, 521 29, 521 31, 525366, B01D 5304

Patent

active

047819006

ABSTRACT:
A process for purifying a gaseous mixture comprising arsine, phosphine, ammonia, and/or inert gases, to remove Lewis acid and/or oxidant impurities therefrom, comprising contacting the mixture with a scavenger including a support having associated therewith an anion which is effective to remove such impurities, such anion being selected from one or more members of the group consisting of: (i) carbanions whose corresponding protonated compounds have a pK.sub.a value of from about 22 to about 36; and (ii) anions formed by reaction of such carbanions with the primary component of the mixture.

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