Performance of a zeolite-containing catalyst and catalysts based on noble metals in intermolecular hydrogen transfer between С6 hydrocarbons

Resumo

The activities of a zeolite-containing catalyst and catalysts containing a noble metal in intermolecular hydrogen transfer between С₆ hydrocarbons are compared. The zeolite-containing catalyst is ineffective in hydrogen transfer from cyclohexane to 1-hexene and in cyclohexene conversion at <400°С. Cyclohexene disproportionation at Т < 200°С takes place only over catalysts containing a noble metal. The cyclohexene conversion selectivity depends strongly on the support type. Using deuterated compounds, it has been demonstrated that intermolecular hydrogen transfer via the dehydrogenation–hydrogenation mechanism involves only the initial cyclohexene.