PURPOSE: To obtain a mixture containing propylene and butene in good conversion ratio and selectivity ratio, by heating an ethylene-containing gas in the presence of H2 at a specific temperature using a tungsten oxide catalyst supported on an inorganic carrier.
CONSTITUTION: A gas containing preferably high-purity ethylene is reacted with H2 in the presence of a tungsten oxide catalyst supported on an inorganic carrier at 100W500°C, preferably 150W350°C under partial pressure of both ethylene and H2 of 0.01W50 atmospheric pressure, preferably 0.1W10 atmospheric pressure, to give a mixture containing propylene and butene. The catalyst is obtained by supporting WO3 on the inorganic carrier such as TiO2, ZrO2, Al2O3, etc., reducing it under a reducing atmosphere such as a hydrogen flow, etc. so that WO3 is partially reduced to give a catalyst wherein an oxide shown by the formula WOx (x is 2.5W3) supported on the carrier, and the molar ratio of tungsten oxide/carrier is 0.5W100/100, preferably 2W50/100.
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YAMAGUCHI TSUTOMU
NAKAMURA SHIYUUICHI
