Chromium-catalyzed reactions of carbon monoxide with hydrocarbons in the presence of UV light
AssigneeChevron Phillips Chemical Company LP
InventorsMax P. McDaniel, Mitchell D. Refvik, Jeremy M. Praetorius, Kathy S. Clear, Jared L Barr, Carlos A. Cruz, Masud M. Monwar
Life of this patent
Estimating the term…
Abstract
A hydrocarbon compound and carbon monoxide are reacted in the presence of either a supported chromium (VI) catalyst or a supported chromium (II) catalyst, optionally with UV-visible light irradiation and/or exposure to an oxidizing atmosphere, followed by removing a reaction product containing an alcohol compound and/or a carbonyl compound from the respective chromium catalyst. Often, the reaction product contains one or more ketone and/or aldehyde compounds.
Claims20
A process comprising:
- (a) contacting a hydrocarbon reactant, carbon monoxide, and a supported chromium (II) catalyst to form a treated chromium catalyst;
- and
- (b) removing from the treated chromium catalyst a reaction product comprising an alcohol compound and/or a carbonyl compound.
A process comprising:
- (i) irradiating a hydrocarbon reactant, carbon monoxide, and a supported chromium catalyst comprising chromium in a hexavalent oxidation state with a light beam at a wavelength in the UV-visible spectrum to reduce at least a portion of the supported chromium catalyst to form a reduced chromium catalyst;
- (ii) subjecting the reduced chromium catalyst to an oxidizing atmosphere, wherein:
- the oxidizing atmosphere comprises air;
- and
- a molar ratio of elemental oxygen in the oxidizing atmosphere to chromium of the reduced chromium catalyst is at least 10:1;
- and
- (iii) removing from the reduced chromium catalyst a reaction product comprising an alcohol compound and/or a carbonyl compound.
A process comprising:
- (a) contacting ethylene, carbon monoxide, and a supported chromium (II) catalyst to form a treated chromium catalyst;
- and
- (b) contacting the treated chromium catalyst and an optional co-catalyst with ethylene and an optional olefin comonomer in a polymerization reactor system under polymerization reaction conditions to produce an ethylene polymer.
A process comprising:
- (a) contacting ethylene, carbon monoxide, and a supported chromium (II) catalyst to form a treated chromium catalyst;
- and
- (b) contacting the treated chromium catalyst and an optional co-catalyst with ethylene in a polymerization reactor system under polymerization reaction conditions to produce an ethylene/carbon monoxide copolymer.
Dependencies are inferred from the claim text.