Modified catalyst and a method of using same for conversion...

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 1/20 (2006.01) C07C 1/00 (2006.01)

Patent

CA 2302955

A method for converting methoxy compounds, such as methanol and dimethyl ether, into olefins, preferably ethylene, by contact with catalyst specifically prepared and/or conditioned to achieve a high yield of ethylene from the quantity of methoxy compound converted. Diffusity of the catalyst is increased by reducing it to a fine particle size and reaction conditions are controled to ensure that less than 100 % of the methoxy compound fed to a fixed of such catalyst is converted so as to produce a yield of ethylene of greater than 60 %.

L'invention concerne un procédé qui permet de convertir des composés méthoxy, tels que le méthanol et le diméthyléther, en oléfines, de préférence en éthylène, en les mettant en contact avec un catalyseur spécialement préparé et/ou conditionné pour obtenir un bon rendement d'éthylène à partir de la quantité de composé méthoxy convertie. Le coefficient de diffusion du catalyseur est augmenté par sa réduction en fines particules et les conditions de la réaction sont régulées de façon à assurer que la conversion d'une quantité inférieure à 100 % du composé méthoxy amené à un lit fixe dudit catalyseur permet d'obtenir un rendement en éthylène supérieur à 60 %.

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