FIELD: organic chemistry. SUBSTANCE: a-olefins and saturated hydrocarbons are cleared of carbon monoxide by contacting at 0 to 150 C with a catalytic system containing a mixture and/or a product of reaction of copper oxide with one or more oxides of the IY B group metals of the Periodic Table, the copper oxide to group IY B metal oxide molar ratio being from 1:10 to 10:1. EFFECT: more efficient purification process. 8 cl, 1 tbl
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