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US 12,544,746 B2Granted
Method for preparing a steam reforming catalyst, catalyst and related use
AssigneePetroleo Brasileiro S.A. - Petrobras
InventorRoberto Carlos Pontes Bittencourt
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Abstract
The present invention addresses to a method of preparing steam reforming catalysts, of the eggshell type, using a solution of glycerin, in polar solvent, preferably water, to occupy the pores of a support. Next, the solvent is removed and the support is impregnated with a nickel salt solution, which may contain promoters such as rare earths. The steps can be repeated until the desired content of the active phase and promoters is reached.
Claims18
A method of preparing a steam reforming catalyst, the method comprising:
- a) impregnating an inorganic oxide support with a solution of glycerin and polar solvent, at temperatures lower than 90° C. and contact times of less than 1 hour;
- b) drying the inorganic oxide support of step (a) to remove the polar solvent, at a temperature between 50° C. and lower than 290° C. such that glycerin remains in the inorganic oxide support;
- c) impregnating the inorganic oxide support containing glycerin obtained in step (b) with a solution containing a nickel salt and optionally promoters, at a temperature between 25° C. and 90° C. and contact times between the nickel solution and the inorganic oxide support containing glycerin of less than 1 hour;
- d) drying the catalyst obtained in step (c) at a temperature of less than 150° C.;
- e) calcining the catalyst at temperatures between 300° C. and 600° C.;
- f) optionally, repeating steps c) to e) to obtain the desired content of nickel oxide in the catalyst.
3 more elements
Dependencies are inferred from the claim text.