Process for the sorption of residual gas by means of a non-evapo

Details Process for the sorption of residual gas by means of a non-evapo Process for the sorption of residual gas by means of a non-evapo

1993-07-12

1994-05-17

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

2521814, 2521817, 313481, 313561, 423219, 423235, 4232391, 423247, B01J 806

Patent

active

053126068

ABSTRACT:
The process of the present invention provides for the sorption of unwanted gas in a vessel by means of a non-evaporated barium getter. It comprises the steps of reducing an alloy of Ba.sub.1-x A.sub.x Li.sub.4-y B.sub.y to a particle size of less than 5 mm, under vacuum or an inert gas atmosphere and then placing the reduced alloy in the vessel. Upon exposing the reduced alloy to the residual gas in the vessel at a temperature of less than 150.degree. C., the gas is sorbed. The metal A is a metal chosen from the group consisting of elements of Group IIa of the periodic table of elements, excluding barium. The metal B is chosen from the group consisting of elements of Group IIIa of the periodic table of elements. Preferably 0.ltoreq.x.ltoreq.0.5 and 0.ltoreq.y.ltoreq.3.5.

REFERENCES:
patent: 859021 (1907-07-01), Soddy
patent: 4203049 (1980-05-01), Kuus
patent: 4665343 (1987-05-01), Ferrario et al.
Joseph Babor, Basic College Chemistry 2nd Ed, 1953, p. 256.

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