| abstract |
a feed stream comprising hydrogen and a gas selected from carbon monoxide, carbon dioxide or a combination thereof is converted into a product mixture containing a combination of two carbon atoms and three saturated and unsaturated carbon atoms by contact with a mixed catalyst comprising a mixed metal oxide catalyst selected from a copper oxide catalyst, copper oxide / zinc oxide, copper oxide / alumina, copper oxide / zinc oxide / alumina, a zinc oxide catalyst chromium oxide or a combination thereof, in admixture with a molecular sieve catalyst having a type of a, a, a, a, b, b d or ddr structure or a combination of such molecular sieves. Examples of molecular sieve catalysts include frog-34, frog-18, frog-5 and beta. advantages include reduced production of c1 hydrocarbons, c4 hydrocarbons and higher, or both; long catalyst lives; desirable conversions; and desirable proportions of paraffins c2 and c3. |