B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
260/372, 252/85
B01J 38/60 (2006.01) B01J 23/52 (2006.01) B01J 23/96 (2006.01) B01J 38/70 (2006.01) C07D 301/04 (2006.01) C07D 301/10 (2006.01)
Patent
CA 2319612
The invention relates to a method for regenerating supported catalysts covered with gold particles, based on titanium dioxide or titanium dioxide hydrate and used for oxidising unsaturated hydrocarbons in a gas phase. The invention is characterised in that the catalyst is regenerated by contacting it with water, a diluted acid or a diluted hydroperoxide solution, to restore its catalytic activity. The invention also relates to the use of regenerated catalysts for oxidising ethene, propene, 1-butene or 2-butene in the gas phase.
L'invention concerne un procédé pour régénérer un catalyseur à support recouvert de particules d'or, à base de dioxyde de titane ou d'hydrate d'oxyde de titane, servant à l'oxydation d'hydrocarbures insaturés dans la phase gazeuse. L'invention est caractérisée en ce que l'on régénère le catalyseur en le mettant en contact avec de l'eau ou de l'acide dilué ou avec une solution d'hydroperoxyde diluée, pour lui redonner son activité catalytique. L'invention concerne également l'utilisation de ces catalyseurs régénérés pour l'époxydation d'éthène, de propène, de 1-butène ou de 2-butène dans la phase gazeuse.
Dilcher Herbert
Dorf Ernst-Ulrich
Lucke Bernhard
Schild Christoph
Schulke Ulrich
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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