Hydrogenation catalyst and method for preparing the same
AssigneeShell Oil Company
InventorsAndreas Klemt, László Domokos, Frank Peter Friedel, Stefan Boettcher, Erwin Roderick Stobbe
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Abstract
The invention relates to a method for preparing a hydrogenation catalyst or catalyst precursor comprising a catalytically active material and a carrier material. The method involves the mixing of an acidic solution comprising metal ions of a metal selected from the IUPAC group 8, 9 or 10 metals, preferably cobalt, a suspension comprising the carrier material and an alkaline solution. The invention also relates to a precursor of a hydrogenation catalyst wherein the precursor comprises crystallites of metal oxides having an average size of max. 8 nm.
Claims12
A method for preparing a hydrogenation catalyst comprising a catalytically active material and a carrier material, the method comprising:
- providing an acidic solution comprising cobalt ions, a suspension comprising titania as carrier material, and an alkaline solution comprising a carbonate containing salt,
- wherein one or more of the alkaline solution and the suspension further comprises one of a carboxylic acid and a conjugated base thereof,
- wherein the conjugated base of the carboxylic acid is present at least in the alkaline solution and wherein the carboxylic acid and the conjugated base thereof have at least two carboxylic acid groups having a pKa value in the range of 4.0-6.5;
- and
- mixing the acidic solution, the suspension, and the alkaline solution causing the cobalt to precipitate in the presence of the carrier material to form a mixture comprising a metal precipitate.
Dependencies are inferred from the claim text.