Removal of phosphine contaminant from carbon monoxide gas...

Details Removal of phosphine contaminant from carbon monoxide gas... Removal of phosphine contaminant from carbon monoxide gas...

B - Operations, Transporting

01

D

23/341

B01D 53/34 (2006.01) C01B 25/12 (2006.01)

Patent

CA 1109233

ABSTRACT: REMOVAL OF PHOSPHINE CONTAMINANT FROM CARBON MONOXIDE GAS MIXTURES A method for removing small concentrations of phos- phine contained in a carbon monoxide gas mixture by prefer- entially oxidizing the phosphine, in which the phosphine is oxidized with air at a temperature of from 500°C to 800°C to form phosphorus pentoxide, which is recovered from the gas mixture preferably as phosphoric acid.

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