Chromium-catalyzed production of alcohols from hydrocarbons

Patent metadata

Field	Value
Publication number	US-11999679-B2
Application number	US-202318454844-A
Country	US
Kind code	B2
Filing date	Aug 24, 2023
Priority date	Sep 16, 2019
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed, and these processes include the steps of forming a supported chromium catalyst comprising chromium in a hexavalent oxidation state, irradiating the hydrocarbon reactant and the supported chromium catalyst with a light beam at a wavelength in the UV-visible spectrum to reduce at least a portion of the supported chromium catalyst to form a reduced chromium catalyst, and hydrolyzing the reduced chromium catalyst to form a reaction product comprising the alcohol compound and/or the carbonyl compound. The supported chromium catalyst can be formed by heat treating a supported chromium precursor, contacting a chromium precursor with a solid support while heat treating, or heat treating a solid support and then contacting a chromium precursor with the solid support.

First claim

We claim:

1. A supported catalyst comprising:
a chemically-treated solid oxide comprising sulfated alumina, fluorided alumina, fluorided silica-alumina, fluorided silica-coated alumina, or any combination thereof; and
a chromate compound in an amount from about 0.1 to about 25 wt. % of chromium, based on the weight of the catalyst.

2. The catalyst of claim 1 , wherein the chromate compound comprises potassium chromate, sodium chromate, ammonium chromate, potassium dichromate, sodium dichromate, ammonium dichromate, or any combination thereof.

3. The catalyst of claim 1 , wherein the catalyst contains from about 0.25 to about 15 wt. % chromium.

4. The catalyst of claim 3 , wherein the catalyst further comprises from about 0.25 to about 15 wt. % alkali metal.

5. The catalyst of claim 1 , wherein the catalyst has:
a total pore volume from about 0.1 to about 3 mL/g; and
a BET surface area from about 50 to about 700 m 2 /g.

6. The catalyst of claim 1 , wherein the chemically-treated solid oxide comprises fluorided silica-coated alumina.

7. The catalyst of claim 6 , wherein the fluorided silica-coated alumina:
contains from about 2 to about 15 wt. % fluorine; and
has a weight ratio of alumina to silica from about 1:5 to about 5:1.

8. The catalyst of claim 7 , wherein the fluorided silica-coated alumina has a weight ratio of alumina to silica from about 1:1 to about 2:1.

9. The catalyst of claim 1 , wherein the catalyst contains from about 0.25 to about 15 wt. % chromium.

10. The catalyst of claim 1 , wherein the chromate compound comprises potassium chromate.

11. The catalyst of claim 1 , wherein the chromate compound comprises sodium chromate.

12. The catalyst of claim 1 , wherein the chromate compound comprises ammonium chromate.

13. The catalyst of claim 1 , wherein the chromate compound comprises potassium dichromate.

14. The catalyst of claim 1 , wherein the chromate compound comprises sodium dichromate.

15. The catalyst of claim 1 , wherein the chromate compound comprises ammonium dichromate.

16. The catalyst of claim 1 , wherein the catalyst further comprises from about 0.25 to about 15 wt. % alkali metal.

17. The catalyst of claim 16 , wherein the chromate compound comprises potassium chromate, sodium chromate, potassium dichromate, sodium dichromate, or any combination thereof.

18. The catalyst of claim 17 , wherein the chemically-treated solid oxide comprises fluorided silica-coated alumina.

19. The catalyst of claim 17 , wherein the chemically-treated solid oxide comprises sulfated alumina.

20. The catalyst of claim 17 , wherein the catalyst has:
a total pore volume from about 0.1 to about 3 mL/g; and
a BET surface area from about 50 to about 700 m 2 /g.

Assignees

• Chevron Phillips Chemical Co Lp

Inventors

• Cruz Carlos A
• Monwar Masud M
• Mcdaniel Max P
• Barr Jared
• Clear Kathy S
• Ellis William C

Classifications

• B01J35/40

  characterised by dimensions, e.g. grain size (in a colloidal state B01J35/23; crystallite size B01J35/77) · CPC title

• C07C29/72 Primary

  by oxidation of carbon-to-metal bonds · CPC title

• B01J21/063

  Titanium; Oxides or hydroxides thereof · CPC title

• B01J21/08

  Silica · CPC title

• B01J23/26

  Chromium · CPC title