Tetravalent titanium treated calcined vanadium catalyst with trialkylaluminum cocatalyst

摘要

A supported vanadium catalyst is provided by impregnating a vanadium compound onto a refractory support, subjecting the resulting support to calcination and thereafter contacting with a titanium component such as titanium tetrachloride. The resulting catalyst is used with a trihydrocarbylaluminum cocatalyst such as triethylaluminum and results in a supported vanadium catalyst having high activity which catalyst is sensitive to molecular weight control agents such as hydrogen.