Catalyst support material and use thereof
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United States of America Patent
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Mar 1, 2005
Grant Date -
Feb 13, 2003
app pub date -
Jul 18, 2002
filing date -
Jan 20, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for the preparation of a catalyst support material involving 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.
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