Manufacture of propylene oxide
AssigneeBASF SE
InventorsGerd Fouquet, Franz Merger, Karl Baer
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Abstract
Propylene oxide is prepared by elimination of water from propylene glycol which in turn is obtainable from propylene glycol acetate. The water is eliminated in the gas phase over a solid catalyst which consists of a weakly acidic carrier and an alkaline additive. The process offers a new method of manufacturing propylene oxide.
Claims5
A process for the manufacture of propylene oxide which comprises heating 1,2-propylene glycol or a mixture containing at least 70% by weight of 1,2-propylene glycol and up to 30% by weight of one or more monoesters, with or without diesters, of 1,2-propylene glycol with low molecular weight carboxylic acids, in the gas phase at a temperature of from 300.degree. to 500.degree. C. under a pressure of from 0.01 to 1 bar over a catalyst which contains a weakly acidic carrier and an added basic alkali metal salt of a low-molecular weight carboxylic acid.
Dependencies are inferred from the claim text.