Abstract
Catalytic properties of Al, Ga, Si, Bi, Pb and Fe oxides and graphitized carbon towards propane oxidation by SO 2 were studied in a continuous flow reactor at 873-913 K. Oxidative condensation products (OCP) containing C,H,O and S which form during reaction over Ga,Al,Si oxides and carbon, were shown to be active towards propylene formation. Sulphidization of Fe,Bi and Pb oxides in the reaction did not increase the activity. As shown by XPS, OCP contain sulphur in S O state which participates in the limiting reaction step. A scheme of the mechanism of propylene formation over OCP is proposed.
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