Platinum/palladium zeolite catalyst
AssigneeClariant Produkte (Deutschland) GmbH
InventorsArno Tissler, Mika Endler, Patrick Mueller, Grigory Reznikov, Florian Weilermann, Margit Schuschke, Andane Stein, Frank Klose
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for producing a bimetallic catalyst containing palladium and platinum on a zeolitic carrier material, to a bimetallic catalyst that can be obtained by means of the method, and to the use of the catalyst in oxidation catalysis.
Claims19
A method for producing a bimetallic catalyst comprising the steps of:
- a) impregnating a zeolitic support material with sulfur-free Pt and Pd precursor compounds, wherein the Pt and Pd precursor compounds are solutions of nitrates,
- b) drying the impregnated zeolitic support material in air, and
- c) calcinating the impregnated and dried zeolitic support material under protective gas, wherein the zeolitic support material has a structure type of BEA and wherein the structure type corresponds to the IUPAC Commission of Zeolite Nomenclature.
A catalyst comprising a bimetallic catalytically active composition comprising Pt and Pd on a zeolitic support material made by a method comprising the steps of:
- a)impregnating a zeolitic support material with sulfur-free Pt and Pd precursor compounds, wherein the Pt and Pd precursor compounds are solutions of nitrates,
- b) drying the impregnated zeolitic support material in air, and
- c) calcinating the impregnated and dried zeolitic support material under protective gas, wherein the zeolitic support material has a structure type of BEA and wherein the structure type corresponds to the IUPAC Commission of Zeolite Nomenclature.
A method for producing a bimetallic catalyst comprising the steps of:
- a)impregnating a zeolitic support material with sulfur-free Pt and Pd precursor compounds, wherein the Pt and Pd precursor compounds are solutions of nitrates,
- b) drying the impregnated zeolitic support material in air,
- c) calcinating the impregnated and dried zeolitic support material under protective gas,
- d) producing a washcoat from the impregnated and calcined zeolitic support material,
- e) coating a support body with the washcoat, and
- f) drying and calcinating the coated support body in air, wherein the calcinating step takes place at temperatures from 300 to 600° C. and wherein the zeolitic support material has a structure type of BEA and wherein the structure type corresponds to the IUPAC Commission of Zeolite Nomenclature.
A method for producing a bimetallic catalyst comprising the steps of
- a) impregnating a zeolitic support material with sulfur-free Pt and Pd precursor compounds, wherein the Pt and Pd precursor compounds are solutions of nitrates,
- b) drying the impregnated zeolitic support materia in air,
- c) calcinating the impregnated and dried zeolitic support material under protective gas,
- d) producing a washcoat from the impregnated and calcined zeolitic support material and a silicatic binder,
- e) coating a support body with the washcoat, and
- f) drying and calcinating the coated support body in air, wherein the calcinating step takes place at temperatures from 300 to 600° C. and wherein the zeolitic support material has a structure type selected from the group consisting of BEA and MFI, and wherein the structure type corresponds to the IUPAC Commission of Zeolite Nomenclature.
A catalyst comprising a bimetallic catalytically active composition comprising Pt and Pd on a zeolitic support material made by a method comprising the steps of:
- a)impregnating a zeolitic support material with sulfur-free Pt and Pd precursor compounds, wherein the Pt and Pd precursor compounds are solutions of nitrates,
- b) drying the impregnated zeolitic support material in air,
- c) calcinating the impregnated and dried zeolitic support material under protective gas,
- d) producing, a washcoat from the impregnated and calcined zeolitic support material and a silicatic binder,
- e)coating a support body with the washcoat, and
- f) drying and calcinating the coated support body in air, wherein the calcinating step takes place at temperatures from 300 to 600° C. and wherein the zeolitic support material has a structure type selected from the group consisting of BEA and MFI, and wherein the structure type corresponds to the IUPAC Commission of Zeolite Nomenclature.
Dependencies are inferred from the claim text.