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US 10,906,026 B2Granted
Methods of making spray-dried metathesis catalysts and uses thereof
AssigneeSaudi Arabian Oil Company
InventorsFaisal H. Alshafei, Munir D. Khokhar, Sohel K. Shaikh, Mohammed R. Alalouni, Gopal Juttu
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Abstract
Provided here are catalyst compositions containing tungsten oxide on silica supports and prepared by spray drying a mixture containing a tungsten precursor, silica support, and a surfactant. Also provided here are methods of using the catalytic compositions, prepared by spray drying, in an olefin metathesis process to produce propylene from butenes.
Claims20
A method for the preparation of a spray-dried metathesis catalyst composition, the method comprising:
- combining a tungsten precursor with a surfactant to form a first mixture;
- contacting the first mixture with a second mixture containing a silica support under conditions of constant stirring to form a third mixture containing the tungsten precursor loaded on the silica support, wherein the silica support comprises mesoporous silica supports, wherein the mesoporous silica support comprises SiO2;
- and
- subjecting the third mixture to a spray drying process to obtain a spray-dried metathesis catalyst composition containing tungsten oxide loaded on the silica support.
1 more element
A method for production of propylene, the method comprising:
- contacting a hydrocarbon feedstock containing butenes under metathesis reaction conditions with a catalyst containing tungsten oxide on a silica support to produce a product stream containing propylene, the catalyst having been prepared by a spray drying process, wherein the silica support comprises mesoporous silica supports, wherein the mesoporous silica support comprises SiO2;
- and
- fractionating the product stream to form a propylene-rich stream.
Dependencies are inferred from the claim text.