Deactivation of Mesoporous Titanosilicate-supported WO 3 Catalyst for Metathesis of Butene to Propene by Coke

Catalyst deactivation by coke was studied during metathesis of butene to propene on the WO3/MTS-9 catalyst. Characterization results of the coked catalyst showed that the pore volume, pore size, and specific surface area of the catalyst decreased significantly for coke; the coke amount in larger pore of catalyst was higher than that in smaller pores of the catalyst. Coke resulted in the decrease of the acidic amount and the activity of catalyst. The component of carbon deposits was aromatic-olefin compounds.