Fischer-tropsch processes producing increased amounts of alcohols

Patent metadata

Field	Value
Publication number	US-12565463-B2
Application number	US-202118252683-A
Country	US
Kind code	B2
Filing date	Dec 17, 2021
Priority date	Dec 18, 2020
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

The present disclosure relates generally to compositions and processes for producing Fischer-Tropsch catalysts. In particular, the disclosure provides for a process for producing a product composition comprising alcohols and liquid hydrocarbons via a Fischer-Tropsch synthesis reaction, the process comprising: contacting a mixture of hydrogen and a gaseous carbon oxide that is carbon monoxide, carbon dioxide or a combination thereof and an olefin co-feed with a supported cobalt-manganese Fischer-Tropsch synthesis catalyst to provide the product composition; wherein the olefin co-feed comprises at least one C 2 -C 14 olefin and is present in an amount in the range of 0.001 wt % to 40 wt % relative to the total amount of hydrogen, the gaseous carbon oxide and olefin; wherein a weight ratio of manganese to cobalt in the catalyst is at least 0.05 on an elemental basis.

First claim

What is claimed is:

1 . A process for converting a mixture of hydrogen gas and a gaseous carbon oxide that is carbon monoxide, carbon dioxide, or a combination thereof to a product composition comprising alcohols and liquid hydrocarbons via a Fischer-Tropsch synthesis reaction, the process comprising:
contacting a mixture of hydrogen gas and the gaseous carbon oxide and an olefin co-feed with a supported cobalt-manganese Fischer-Tropsch synthesis catalyst to provide the product composition; wherein the olefin co-feed comprises at least one C 2 -C 14 olefin and is present in an amount in the range of 0.001 wt % to 40 wt % relative to the total amount of hydrogen, the gaseous carbon oxide and olefin; wherein a weight ratio of manganese to cobalt in the catalyst is at least 0.05 on an elemental basis; and wherein the molar ratio of hydrogen to the gaseous carbon oxide in the mixture of hydrogen and the gaseous carbon oxide is at least 0.5.

2 . The process of claim 1 , wherein the weight ratio of manganese to cobalt present in the synthesis catalyst is in the range of 0.05 to 3.0 on an elemental basis.

3 . The process of claim 1 , wherein the synthesis catalyst comprises at least 0.5 wt % manganese on an elemental basis.

4 . The process of claim 1 , wherein the synthesis catalyst comprises in the range of 2.5-25 wt % manganese on an elemental basis.

5 . The process of claim 1 , wherein the synthesis catalyst comprises cobalt in an amount of 2-35 wt %, on an elemental basis.

6 . The process of claim 1 , wherein the synthesis catalyst comprises cobalt in an amount of 5-20 wt %, on an elemental basis.

7 . The process of claim 1 , wherein the total amount of cobalt and manganese in the synthesis catalyst is no more than 40 wt % on an elemental basis, based on the total weight of the synthesis catalyst.

8 . The process of claim 1 , wherein the catalyst comprises a support material that comprises at least one oxide selected from alumina, zirconia, zinc oxide, ceria, silica and titania.

9 . The process of claim 1 , wherein the contacting is conducted at a pressure in the range of 1.0 to 10.0 MPa absolute.

10 . The process of claim 1 , wherein the contacting is conducted at a temperature of no more than 350° C.

11 . The process of claim 1 , wherein the gaseous carbon oxide is carbon monoxide.

12 . The process of claim 1 , wherein the gaseous carbon oxide is carbon dioxide or a mixture of carbon monoxide and carbon dioxide.

13 . The process of claim 1 , wherein the olefin co-feed is present in an amount in the range of 0.001 wt % to 30 wt %, relative to the total amount of hydrogen, the gaseous carbon oxide and olefin.

14 . The process of claim 1 , wherein the olefin co-feed is present in an amount in the range of 0.1 wt % to 20 wt %, relative to the total amount of hydrogen, the gaseous carbon oxide and olefin.

15 . The process of claim 1 , wherein the olefin co-feed comprises at least one linear olefin.

16 . The process of claim 1 , wherein the olefin co-feed comprises at least one cyclic olefin or at least one branched olefin.

17 . The process of claim 1 , wherein the olefin co-feed is at least 90% C 2 -C 14 olefins.

18 . The process of claim 1 , wherein the olefin co-feed is at least 90% C 2 -C 5 olefins.

19 . The process of claim 1 , wherein the product composition comprises at least 10 wt % alcohols.

20 . The process of claim 1 , wherein the product composition comprises at least 20 wt % alcohols.

Assignees

• Bp Plc

Inventors

• Paterson Alexander James
• Sunley John Glenn

Classifications

• B01J35/45

  Nanoparticles · CPC title

• C07C29/1512

  characterised by reaction conditions · CPC title

• B01J23/8892

  Manganese · CPC title

• C07C29/156 Primary

  containing iron group metals, platinum group metals or compounds thereof · CPC title

• C10G2/332 Primary

  of the iron-group · CPC title