CPC B01J 37/0207 (2013.01) [B01J 6/001 (2013.01); B01J 23/80 (2013.01); B01J 37/0209 (2013.01); B01J 37/0236 (2013.01); C01B 3/16 (2013.01); B01J 21/04 (2013.01); C01B 2203/0283 (2013.01); C01B 2203/1076 (2013.01); C01B 2203/1082 (2013.01); C01B 2203/1614 (2013.01); C01B 2203/1628 (2013.01)] | 12 Claims |
1. Method for preparing a water gas shift reaction catalyst, free of iron or chromium, comprising:
a) Impregnating an alumina support with an aqueous solution of a potassium salt;
b) Drying the support to remove the solvent and calcine the alumina support at temperatures between 400° C. and 800° C. to obtain a potassium promoted alumina, preferably forming potassium aluminate species;
c) Impregnating the potassium promoted alumina with an aqueous polar solution containing a soluble zinc salt and a soluble copper salt;
d) Drying at a temperature between 80° C. and 120° C., and calcining the material at temperatures between 300° C. and 500° C., to obtain a catalyst consisting of alumina promoted with potassium and containing zinc and copper oxides;
e) Impregnating the material obtained in step (d) with an aqueous solution of a nickel salt, drying at a temperature between 80° C. and 120° C., optionally calcining between 350° C. to 450° C., to obtain a catalyst consisting of alumina promoted with potassium and containing zinc and copper oxides promoted by nickel.
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