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US 10,300,460 B1Granted
Aqueous methods for titanating a chromium/silica catalyst
AssigneeChevron Phillips Chemical Company LP
InventorsMax P. McDaniel, Kathy S. Clear, Eric D. Schwerdtfeger, Jeremy M. Praetorius
Life of this patent
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Abstract
Methods for synthesizing a water-soluble titanium-silicon complex are disclosed herein. The titanium-silicon complex can be utilized to produce titanated solid oxide supports and titanated chromium supported catalysts. The titanated chromium supported catalysts subsequently can be used to polymerize olefins to produce, for example, ethylene based homopolymer and copolymers.
Claims27
A process for preparing a titanated chromium supported catalyst, the process comprising:
- (1) contacting a silicon compound with water and an acid or a base in a solvent to form a first solution containing a partially-hydrolyzed silicon material;
- (2) contacting a titanium compound with the first solution containing the partially-hydrolyzed silicon material to form a second solution containing a titanium-silicon complex;
- and
- (3) combining a chromium-containing compound, at least a portion of the second solution containing the titanium-silicon complex, a solid support, and optionally, additional water, and drying to form the titanated chromium supported catalyst.
1 more element
A process for preparing a titanated chromium supported catalyst, the process comprising:
- (1) contacting a silicon compound with water and an acid or a base in a solvent to form a first solution containing a partially-hydrolyzed silicon material;
- (2) contacting a titanium compound with the first solution containing the partially-hydrolyzed silicon material to form a second solution containing a titanium-silicon complex;
- and
- (3) combining at least a portion of the second solution containing the titanium-silicon complex, a supported chromium catalyst, and optionally, additional water, and drying to form the titanated chromium supported catalyst.
1 more element
Dependencies are inferred from the claim text.