Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

OP-III-5CATALYTIC DENSE BIMEVOX MEMBRANE REACTOR: A REVIEWBodet H., Kongmark C., Lofberg A., Pirovano C., Vannier R.N., Bordes-Richard E.Unité de Catalyse et de Chimie du Solide,Université des Sciences et Technologies de Lille (Villeneuve d'Ascq cedex)BIMEVOX materials based on Bi 4 V 2 O 11 structure are known as highly oxide ionconducting materials at low temperatures (400-700°C). BIMEVOX membranes which behaveas Mixed Ionic Electronic Conductors were used in the oxidation of alkanes in a catalyticdense membrane reactor (CDMR). This device allows to carry out the redox mechanism ofoxidation in two separate steps, the dense ceramic membrane separating two compartments,one containing the oxidant (air), the other containing the (diluted) hydrocarbon to be oxidized.The driving force is the difference between the oxygen chemical potentials in eachcompartment. The paper presents the last developments when an electric current is applied toa gold/BIMEVOX cermet deposited on the BIMEVOX membrane in order to fasten thetransfer of specie across the membrane during the catalytic oxidation of methane or of higheralkanes to syngas, and the conclusions on a series of experiments.101