Molybdenum epoxidation catalyst recovery

C - Chemistry – Metallurgy – 07 – D

Patent

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Details

C07D 303/04 (2006.01) B01J 31/40 (2006.01) C07D 301/19 (2006.01) C07D 301/32 (2006.01)

Patent

CA 2256447

An aqueous epoxidation process stream containing molybdenum and sodium values and organics is treated for organics removal as by incineration and an aqueous solution containing molybdenum and sodium is recovered, cooled, acidified and contacted with activated carbon and an aqueous stream reduced in molybdenum is recovered, further molybdenum reduction can be achieved by treatment with basic ion exchange resin.

Ce procédé comprend les étapes consistant à traiter un flux d'un procédé d'époxydation aqueuse, lequel contient des valeurs molybdène et sodium ainsi que des corps organiques, afin d'enlever ces corps organiques par incinération, puis à récupérer une solution aqueuse contenant du molybdène et du sodium, à refroidir, acidifier cette solution et à la mettre en contact avec du charbon actif, puis à récupérer un flux aqueux appauvri en molybdène, et à éventuellement effectuer une autre réduction de molybdène par traitement avec une résine échangeuse d'ions d'une base.

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