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US 5,214,168 AGranted
Integrated process for epoxide production
AssigneeArco Chemical Technology, L.P.
InventorsJohn G. Zajacek, Guy L. Crocco
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Abstract
Epoxides are produced by an integrated process involving air oxidation of an aryl-substituted secondary alcohol, epoxidation of an olefin by the secondary alcohol oxidation product in the presence of a titanium silicalite catalyst, and generation of the secondary alcohol by hydrogenation.
Claims28
An integrated process for the production of an epoxide comprising the steps of
- (a) contacting an aryl-substituted secondary alcohol with molecular oxygen under conditions effective to form an oxidant mixture comprised of the secondary alcohol, an aryl-substituted ketone, and hydrogen peroxide;
- (b) contacting the oxidant mixture with an olefin and a catalytically effective amount of a titanium silicalite for a time and at a temperature effective to convert the olefin to the epoxide;
- and
- (c) reacting the aryl-substituted ketone with hydrogen in the presence of a transition metal hydrogenation catalyst under conditions effective to convert the ketone to the aryl-substituted secondary alcohol.
1 more element
An integrated process for the production of an epoxide comprising the steps of
- (a) contacting alpha-methyl benzyl alcohol with molecular oxygen at a temperature of from 100.degree. C. to 200.degree. C. and a pressure of from 50 to 1000 psig oxygen to form an oxidant mixture comprised of alpha-methyl benzyl alcohol, acetophenone, and from 1 to 10 weight percent hydrogen peroxide;
- (b) contacting the oxidant mixture with an olefin and from 0.01 to 10 grams titanium silicalite per mole of olefin having an MEL or MFI topology and a chemical formula
- xTiO.sub.2 .multidot.(1-x)SiO.sub.2
- wherein x is from 0.01 to 0.125, at a temperature of from 0.degree. C. to 150.degree. C. for a time effective to convert the olefin to epoxide;
- and
- (c) reacting the acetophenone with hydrogen in the presence of a transition metal hydrogenation catalyst wherein the transition metal is platinum, palladium, chromium, rhodium, nickel or ruthenium at a temperature of from 20.degree. to 150.degree. C. and a hydrogen pressure of from 1 to 200 atmospheres to convert the acetophenone to alpha-methyl benzyl alcohol.
3 more elements
Dependencies are inferred from the claim text.