Regeneration of alkene disproportionation catalyst

A process for the regeneration of solid alkene disproportionation catalysts selected from the group consisting of oxides of molybdenum, cobalt, tungsten, rhenium and mixtures thereof supported on alumina or silica which have been used to disproportionate alkene feeds containing at least thirty percent of the alkenes in said feed with carbon numbers of twelve or more and which catalysts have been deactivated by the deposition of organic material which process comprises first contacting the deactivated catalyst with a regenerating alkene or mixtures of alkenes having from 2 to about 5 carbon atoms per molecule at a temperature of from about 50.degree. to about 350.degree. C and then contacting the catalyst with an oxygen-containing gas at a temperature between about 100.degree. and 650.degree. C.