Fischer-Tropsch process, supported Fischer-Tropsch synthesis catalyst and uses thereof

Patent metadata

Field	Value
Publication number	US-11912943-B2
Application number	US-202117554218-A
Country	US
Kind code	B2
Filing date	Dec 17, 2021
Priority date	Feb 9, 2018
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A process for converting a mixture of hydrogen and carbon monoxide gases to a composition comprising alcohols and liquid hydrocarbons by means of a Fischer-Tropsch synthesis reaction, said process comprising contacting a mixture of hydrogen and carbon monoxide gases, preferably in the form of synthesis gas mixture, with a supported Co—Mn Fischer-Tropsch synthesis catalyst, wherein: the support material of the supported Co—Mn Fischer-Tropsch synthesis catalyst comprises a material selected from titania, zinc oxide, zirconia, and ceria; the supported synthesis catalyst comprises at least 2.5 wt % of manganese, on an elemental basis, based on the total weight of the supported synthesis catalyst; the weight ratio of manganese to cobalt, on an elemental basis, is 0.2 or greater; the molar ratio of hydrogen to carbon monoxide is at least 1; and, the Fischer-Tropsch synthesis reaction is conducted at a pressure in the range of from 1.0 to 10.0 MPa absolute.

First claim

The invention claimed is:

1. A supported Co—Mn Fischer-Tropsch synthesis catalyst comprising at least 2.5 wt % of manganese, on an elemental basis, based on the total weight of the supported synthesis catalyst, wherein the support material of the supported Co-Mn Fischer-Tropsch synthesis catalyst comprises a material selected from titania, zinc oxide, zirconia, and ceria, and wherein the synthesis catalyst comprises Co 3 O 4 crystallites having a particle size of less than 60 Angstroms, wherein the Co 3 O 4 crystallite particle sizes are determined by X-ray diffraction.

2. A catalyst according to claim 1 , wherein the supported Co—Mn Fischer-Tropsch synthesis catalyst contains from 5 wt. % to 35 wt. % of cobalt, on an elemental basis, based on the total weight of the supported synthesis catalyst.

3. A catalyst according to claim 1 , wherein the supported Co—Mn Fischer-Tropsch synthesis catalyst contains from 2.5 wt. % to 15 wt. % of manganese, on an elemental basis, based on the total weight of the supported synthesis catalyst.

4. A catalyst according to claim 1 , wherein the combined amount of cobalt and manganese in the supported Co—Mn Fischer-Tropsch synthesis catalyst is less than 30 wt. %, on an elemental basis, based on the total weight of the supported synthesis catalyst.

5. A catalyst according to claim 1 , wherein the weight ratio of manganese to cobalt present, on an elemental basis, is 0.3 or greater.

6. A catalyst according to claim 1 , wherein the synthesis catalyst comprises Co 3 O 4 crystallites having a particle size of less than 40 Angstroms.

7. A catalyst according to claim 1 , wherein the support material comprises titania.

8. A catalyst according to claim 7 , wherein the support material is titania.

9. A catalyst according to claim 1 , wherein the supported Co—Mn Fischer-Tropsch synthesis catalyst is prepared through incipient wetness impregnation.

10. A process for preparing a supported Co—Mn Fischer Tropsch synthesis catalyst as defined in claim 1 , the process comprising:
(a) impregnating a support material with: a cobalt-containing compound and a manganese-containing compound in a single impregnation step to form an impregnated support material; and
(b) drying and calcining the impregnated support material to form the supported Co—Mn Fischer-Tropsch synthesis catalyst.

11. A process according to claim 10 , wherein the support material is impregnated with a solution or suspension comprising both the cobalt-containing compound and the manganese-containing compound.

12. A process according to claim 10 , further comprising a step of reducing the supported Co—Mn Fischer-Tropsch synthesis catalyst to form a reduced supported Co—Mn Fischer-Tropsch synthesis catalyst by contacting with a hydrogen-containing gas stream.

Assignees

• Bp Plc

Inventors

• Paterson Alexander James

Classifications

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J2235/15

  X-ray diffraction · CPC title

• B01J35/393

  Metal or metal oxide crystallite size · CPC title

• C10G2/331 Primary

  containing group VIII-metals · CPC title

• B01J23/8892

  Manganese · CPC title