Method for preparing a modified solid oxide
AssigneeMobil Oil Corporation
InventorsClarence D. Chang, Charles T. Kresge, Jose G. Santiesteban, James C. Vartuli
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Abstract
There is provided a method for preparing an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. An example of this acidic solid is zirconia, modified with tungstate. This modified solid oxide may be used as a catalyst, for example, to isomerize C.sub.4 to C.sub.8 paraffins. The modified solid oxide is prepared by co-precipitating the Group IVB metal oxide along with the oxyanion of the Group VIB metal.
Claims17
A method for preparing a catalyst comprising an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of tungsten, said method comprising co-precipitating the Group IVB metal oxide along with the oxyanion of tungsten, followed by calcining the co-precipitate at a temperature from about 750.degree. C. to about 900.degree. C.
A method for preparing a catalyst comprising an acidic solid comprising tungstate modified zirconia, said method comprising the steps of:
- (a) combining a first liquid solution with a second liquid solution, said first solution comprising a source of zirconia dissolved in water and said second solution comprising a source of tungstate dissolved in water;
- (b) maintaining the combined solutions of step (a) under conditions sufficient to form a solid co-precipitate comprising tungstate-modified zirconia;
- (c) recovering the solid co-precipitate from step (b) by filtration;
- and
- (d) calcining the recovered co-precipitate from step (c) at a temperature from about 750.degree. C. to about 900.degree. C.
Dependencies are inferred from the claim text.