B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/66 (2006.01) B01J 37/02 (2006.01) B01J 37/08 (2006.01) C07D 301/10 (2006.01) C07D 303/04 (2006.01)
Patent
CA 2260433
The present invention relates to silver-containing and optionally promoter-containing supported catalysts and catalyst intermediates, processes for their preparation and their use for preparing alkylene oxides by oxidation of alkenes with oxygen. The catalysts are prepared by treatment of a support with a lactic acid containing silver ions, nitrate ions and optionally promoter metal ions, drying, predecomposition in a virtually oxygen-free atmosphere and subsequent activation by heating in an oxygen-containing atmosphere while precisely controlling the temperature conditions and the feeding-in of oxygen. The catalyst intermediates obtainable by treatment, drying and only predecomposition can be activated in a temporally and physically separate process step to form the actual catalysts. Suitable promoters are alkaline earth metal compounds and/or alkali metal compounds. High activities and high selectivities are achieved when using the catalysts of the invention for preparing alkaline oxides.
Baum Matthias
Grub Joachim
Reimer Alfred
Volprecht Werner
Bp Koln Gmbh
Ec Erdolchemie Gmbh
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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