Catalyst support material and use thereof

Details Catalyst support material and use thereof Catalyst support material and use thereof

B - Operations, Transporting

01

J

B01J 21/20 (2006.01) B01J 38/12 (2006.01) B01J 38/60 (2006.01) B01J 38/66 (2006.01) C07D 301/12 (2006.01) C07D 301/19 (2006.01)

Patent

CA 2397803

Process for the preparation of a catalyst support material comprising the steps of: (a) subjecting a used titania-on-silica catalyst to a decoking treatment, (b) washing the decoked catalyst with a washing liquid selected from an aqueous solution of a mineral acid, an aqueous solution of an ammonium salt and combinations thereof, and (c) drying and calcining the washed and decoked catalyst to yield the catalyst support material. The support material thus obtained is suitably used as support material for titania in a heterogeneous catalyst for the epoxidation of olefins into alkylene oxides.

L'invention concerne un procédé de préparation d'un matériau de support de catalyseur, consistant a) à soumettre un catalyseur titane sur silice à un traitement de décokage, b) à laver le catalyseur décoké au moyen d'un liquide de lavage sélectionné à partir d'une solution aqueuse d'un acide minéral, d'une solution aqueuse d'un sel d'ammonium, et de combinaisons de celles-ci, et c) à sécher et à calciner le catalyseur lavé et décoké pour obtenir le matériau de support de catalyseur. Le matériau de support ainsi obtenu est utilisé, de manière appropriée, comme matériau de support de titane pour un catalyseur hétérogène afin d'époxyder des oléfines dans des oxydes d'alkylène.

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