Inert gas purification

Details Inert gas purification Inert gas purification

1993-08-26

1995-03-21

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

423235, B01D 5300, B01D 7100

Patent

active

053992466

ABSTRACT:
A method for purifying crude argon is disclosed. Trace amounts of oxygen and/or nitrogen are removable by using a combination of a nitride forming metal and an oxygen ion conducting electrolyte cell. Lithium may be electrolytically recovered from lithium nitride. Alternatively, a reactive metal such as lithium may be utilized to remove trace amounts of both nitrogen and oxygen from crude argon.

REFERENCES:
patent: 3943751 (1976-03-01), Akiyama et al.
patent: 4477265 (1984-10-01), Kumar et al.
patent: 4859296 (1989-08-01), Marianowski et al.
patent: 5035726 (1991-07-01), Chen et al.

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