Processes for making tin-containing catalysts
AssigneeCelanese International Corporation
InventorsHeiko Weiner, Radmila Jevtic, Victor Johnston
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Abstract
A process for producing a catalyst comprising the steps of contacting a support with a mixed metal precursor comprising tin oxalate, a second metal precursor, a solubilizing agent such as ammonium oxalate, and water to form an impregnated support and heating the impregnated support under conditions effective to remove at least a weight majority of the water and reduce the tin from the tin oxalate and the second metal from the second metal precursor and thereby form the catalyst.
Claims20
A process for producing a catalyst, the process comprising the steps of:
- (a) contacting a support with a mixed metal precursor solution comprising tin oxalate, a second metal precursor to a second metal, a solubilizing agent, and water to form an impregnated support;
- and
- (b) heating the impregnated support under conditions effective to remove at least a weight majority of the water and reduce the tin from the tin oxalate and the second metal from the second metal precursor and form the catalyst;
- wherein the support is selected from the group consisting of iron oxide, silica, titania, zirconia, magnesium oxide, calcium silicate, carbon, graphite, high surface area graphitized carbon, activated carbons, and mixtures thereof;
- wherein the support comprises a support modifier selected from the group consisting of an acid support modifier and a redox support modifier and
- wherein the catalyst is a hydrogenation catalyst.
A process for producing a catalyst, the process comprising the steps of:
- (a) contacting a support with a mixed metal precursor solution comprising tin oxalate, a second metal precursor to a second metal, a solubilizing agent, and water to form an impregnated support;
- and
- (b) heating the impregnated support under conditions effective to remove at least a weight majority of the water and reduce the tin from the tin oxalate and the second metal from the second metal precursor and form the catalyst;
- wherein the support is selected from the group consisting of iron oxide, silica, titania, zirconia, magnesium oxide, calcium silicate, carbon, graphite, high surface area graphitized carbon, activated carbons, and mixtures thereof;
- wherein the solubilizing agent is selected from the group consisting of sodium oxalate, potassium oxalate, phosphonium oxalate, and combinations thereof;
- and
- wherein the catalyst is a hydrogenation catalyst.
Dependencies are inferred from the claim text.