Method of preparing catalyst support from a waste catalyst

Details Method of preparing catalyst support from a waste catalyst Method of preparing catalyst support from a waste catalyst

B - Operations, Transporting

01

J

B01J 23/94 (2006.01) B01J 21/06 (2006.01) B01J 38/68 (2006.01) C07C 1/04 (2006.01)

Patent

CA 2591795

A method of preparing, preferably recycling, a catalyst support material is disclosed and is particularly applicable to recycling a titania support. The invention includes crushing the used catalyst support that is obtained by leaching catalytic components from a used supported catalyst and preferably combining it with new catalyst support in order to provide the required average particle size and ratio of crystal phases. The invention has a number of benefits including making use of used catalyst support materials which have been conventionally disposed of and also providing a method to more efficiently recycle the active component. Where the support is recycled for a similar application, less promoter may be required.

L'invention concerne un procédé destiné à préparer, de préférence à recycler, une matière de support de catalyseur, et convenant particulièrement au recyclage d'un support de dioxyde de titane. Le procédé de l'invention consiste à broyer le support de catalyseur usé obtenu par lixiviation de constituants catalytiques à partir d'un catalyseur supporté et, de préférence, à le combiner avec un nouveau support de catalyseur de façon à obtenir la dimension granulométrique moyenne et le rapport de phases cristallines requis. Cette invention présente une pluralité d'avantages, y compris l'utilisation de matières de support de catalyseur usé habituellement mises au rebut et la mise en oeuvre d'un procédé permettant de recycler plus efficacement le constituant actif. Lorsque le support est recyclé en vue d'une application similaire, la quantité de promoteur nécessaire peut être réduite.

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