Composite membrane and use thereof for chemical synthesis

B - Operations – Transporting – 01 – J

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B01J 35/06 (2006.01) B01J 31/06 (2006.01) C01B 15/029 (2006.01) C25B 1/30 (2006.01) C25B 13/04 (2006.01)

Patent

CA 2231566

This invention is a composite membrane for chemical synthesis, a chemical reactor into which the composite membrane might be incorporated, and a method of using the composite membrane. The composite membrane comprises a substrate, a first side, and a second side, wherein the substrate operatively connects the first side and second side, the first side comprises an oxidizing catalyst and the second side comprises a reducing catalyst. The reducing catalyst comprises, in elemental or combinative form, lanthanum, zinc, cerium, praeseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, bismuth, or indium. A chemical reactor utilizing this composite membrane can react hydrogen and oxygen to form hydrogen peroxide without direct mixture of the reactants.

Cette invention se rapporte à une membrane composite destinée aux synthèses chimiques, à un réacteur chimique à l'intérieur duquel on peut incorporer ladite membrane composite et à un procédé d'utilisation de ladite membrane composite. La membrane composite comporte un substrat, une première face et une seconde face, le substrat reliant fonctionnellement la première face qui comporte un catalyseur oxydant et la seconde face qui comporte un catalyseur réducteur. Ledit catalyseur réducteur comporte, sous forme élémentaire ou combinée, du lanthane, du zinc, du cérium, du praésodyme, du néodyme, du samarium, de l'europium, du gadolinium, du terbium, du dysprosium, de l'holmium, de l'erbium, du thulium, de l'ytterbium, du lutétium, du bismuth ou de l'indium. Un réacteur chimique qui fait usage de ce type de membrane composite peut faire réagir l'hydrogène et l'oxygène de façon à former du peroxyde d'hydrogène sans mélange direct des réactifs.

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