Catalyst and method of preparation
AssigneeUniversity of Delaware
InventorsAlvin B. Stiles, Glenn L. Schrader, Jr.
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Abstract
A catalyst for the manufacture of organic compounds comprising an intimate mixture of a reducible metal oxide and at least one refractory oxide, treated by heating to a temperature in the range of 550.degree. C. to 1000.degree. C. in the presence of a preselected reducing gas in amount sufficient to substantially inhibit or disrupt crystallite growth as evidenced by characteristic x-ray diffraction pattern, concomitantly enhancing catalytic activity, and the method of preparation.
Claims8
A catalyst composition comprising an intimate mixture of at least two metal oxides one of which is reducible to either a sub-oxide or substantially to the elemental metal state whereas the other is a refractory oxide which is substantially non-reducible, which mixture has been exposed to a reducing gas in sufficient quantity and at a temperature in the range of 550.degree. C. to 1000.degree. C. to cause a substantial inhibition or disruption of crystallite growth as evidenced by x-ray diffraction pattern analysis, concomitantly enhancing catalytic activity.
A method for the manufacture of a catalyst composition comprising, in the following sequence:
- (a) co-precipitating a salt of a reducible metal having catalytic properties together with a salt of a metal capable of forming a refractory oxide,
- (b) calcining the co-precipitate of step (a) in an oxygen-containing atmosphere at a temperature above about 300.degree. C. for a period of time sufficient to produce a reducible metal oxide in mixture with a refractory metal oxide, and
- (c) heating the metal oxide mixture of step (b) in contact with a reducing gas at a temperature in the range of 550.degree. C. to 1000.degree. C. for a time sufficient to cause a substantial inhibition or disruption of crystallite growth as evidenced by X-ray diffraction pattern analysis concomitantly enhancing catalytic activity.
Dependencies are inferred from the claim text.