Hydrocarbon oxidation

Patent metadata

Field	Value
Publication number	US-10934236-B2
Application number	US-201816612729-A
Country	US
Kind code	B2
Filing date	May 11, 2018
Priority date	May 12, 2017
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A method of direct oxidation of a hydrocarbon to produce an oxygenated reaction product, wherein said method comprises contacting a peroxide and oxygen and the hydrocarbon with a suspension of catalyst particles dispersed in a liquid reaction medium, wherein the catalyst particles are unsupported and comprise at least one transition metal.

First claim

The invention claimed is:

1. A method of direct oxidation of a hydrocarbon to produce an oxygenated reaction product, wherein said method comprises contacting a peroxide and oxygen and the hydrocarbon with a suspension of catalyst particles dispersed in a liquid reaction medium, wherein the catalyst particles are unsupported and wherein the catalyst particles comprise at least one transition metal, wherein the catalyst particles comprise an alloy of gold and at least one other transition metal;
and wherein the hydrocarbon is selected from a C 1 to C 8 alkane.

2. The method of claim 1 , wherein the suspension of catalyst particles is a colloidal suspension of catalyst particles.

3. The method of claim 1 , wherein the catalyst particles comprise an alloy of gold and palladium.

4. The method of claim 1 , wherein the catalyst particles comprise particles having a core comprising a first transition metal and a shell comprising a second transition metal.

5. The method of claim 1 , wherein the hydrocarbon is selected from methane, ethane, propane, and a combination thereof.

6. The method of claim 1 , wherein said method is performed at a temperature of 80° C. or less.

7. The method of claim 1 , wherein said method is performed under a total pressure of 0-140 atm.

8. The method of claim 1 , wherein the particles have an average particle diameter of from 1 nm to 10 nm.

9. The method of claim 1 , wherein the catalyst comprises 80 to 100 weight % of metal based on the total weight of the catalyst.

10. The method of claim 1 , wherein the peroxide is hydrogen peroxide.

11. The method of claim 10 , wherein the molar ratio of hydrogen peroxide to hydrocarbon is between 30 to 2000 micromoles of H 2 O 2 to 10 mL of reaction medium.

12. The method of claim 11 , wherein the ratio of hydrogen peroxide to oxygen employed is 50-1000 μmol H 2 O 2 to 5 bar O 2 .

Assignees

• Univ College Cardiff Consultants Ltd

Inventors

• Hutchings Graham
• Agarwal Nishtha
• Freakley Simon
• Taylor Stuart

Classifications

• B01J35/45

  Nanoparticles · CPC title

• B01J2235/00

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

• B01J2235/30

  Scanning electron microscopy; Transmission electron microscopy · CPC title

• B01J35/23

  in a colloidal state · CPC title

• C07C27/16

  with other oxidising agents · CPC title