Apparatus for purifying arsine, phosphine, ammonia, and inert ga

Details Apparatus for purifying arsine, phosphine, ammonia, and inert ga Apparatus for purifying arsine, phosphine, ammonia, and inert ga

1988-03-03

1991-01-08

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

55387, 55388, 422163, 422181, 423210, 423239, 423240, 4232451, 502152, 502157, 502401, 502402, B01J 802, B01J 3106

Patent

active

049833634

ABSTRACT:
An apparatus for purifying a gaseous mixture comprising arsine, phosphine, ammonia, and/or inert gases, to remove Lewis acid and/or oxidant impurities therefrom, comprising a vessel containing a bed of a scavenger, the 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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