Method of preparing epoxidation catalysts
AssigneeLyondell Chemical Technology, L.P.
InventorsRoger Grey, Debra Jackson, Daniel F. White, Sandor Nagy
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Abstract
A method of preparing epoxidation catalysts is disclosed. The method comprises: (a) adding an inorganic siliceous solid to a column to produce a solid-filled column; (b) adding to the solid-filled column a solution comprising titanium tetrachloride and a hydrocarbon solvent to produce a titanium tetrachloride-impregnated solid; and (c) calcining the titanium tetrachloride-impregnated solid at a temperature from 500° C. to 1000° C. to produce the catalyst. The inorganic siliceous solid has a pore volume of at least 0.8 cm3/g.
Claims16
A method of preparing a catalyst, comprising:
- (a) adding an inorganic siliceous solid to a column to produce a solid-filled column;
- (b) adding to the solid-filled column a solution comprising titanium tetrachloride and a hydrocarbon solvent to produce a titanium tetrachloride-impregnated solid;
- and
- (c) calcining the titanium tetrachloride-impregnated solid at a temperature from 500-1000° C. under a nitrogen stream to produce the catalyst wherein the catalyst is prepared in the absence of steam.
A method of preparing a catalyst, comprising:
- (a) adding a mesoporous siliceous solid comprising a pore volume of 0.98-3.2 cm3/g dried at a temperature of 200° C. for 2 hours to a column to produce a solid-filled column;
- (b) adding to the solid-filled column a solution comprising titanium tetrachloride and a hydrocarbon solvent selected from toluene and hexane to produce a titanium tetrachloride-impregnated solid;
- and
- (c) calcining the titanium tetrachloride-impregnated solid at a temperature from 600-700° C. for 2-4 hours under a 100 ml/min-nitrogen stream to produce the catalyst wherein the catalyst is prepared in the absence of steam.
Dependencies are inferred from the claim text.