Method of producing hydrocarbons from methane

Patent metadata

Field	Value
Publication number	US-10450247-B2
Application number	US-201816135869-A
Country	US
Kind code	B2
Filing date	Sep 19, 2018
Priority date	Sep 20, 2017
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

A method for producing hydrocarbons and hydrogen from methane. The method includes packing a catalyst comprising platinum, bismuth and a support material into a reactor; introducing a reactant mixture containing methane into the reactor such that the reactant mixture containing methane is in close contact with the reactant mixture; and heating the reactant mixture containing methane to a temperature for a period of time.

First claim

The invention claimed is:

1. A method for producing hydrocarbons and hydrogen from methane comprising:
packing a catalyst comprising platinum, bismuth and a support material into a reactor;
introducing a reactant mixture containing methane and an inert gas into the reactor; and
subjecting the reactant mixture to a methane coupling reaction to produce hydrocarbons comprising ethane, the coupling reaction comprising a temperature between 500 C. to 700 C. and a time between 1 and 8 h,

wherein the reactant mixture containing methane is converted to ethane with a carbon selectivity of at least 90%.

2. The method of claim 1 , wherein the contact time is in the range of 50-1500 min.g cat /mol.

3. The method of claim 1 , wherein the partial pressure of methane in the reactant mixture is in the range 0.1-1.0 atmosphere.

4. The method of claim 1 , wherein the reactant mixture does not contain oxygen.

5. The method of claim 1 , wherein the inert gas is one of argon, helium and nitrogen.

6. The method of claim 1 , wherein platinum loading in the catalyst is in the range of 0.1-5.0 weight %.

7. The method of claim 1 , wherein bismuth loading in the catalyst is in the range of 0.1-5.0 weight %.

8. The method of claim 1 , wherein the support material is activated carbon.

9. The method of claim 8 , wherein the specific surface area of the activated carbon is in the range of 200-2000 m 2 /g.

10. The method of claim 1 , wherein the support material is ZSM-5 zeolite.

11. The method of claim 10 , wherein the specific surface area of the ZSM-5 zeolite is in the range of 100-800 m 2 /g.

12. The method of claim 1 , wherein the particle size of the support material is from 200 mesh to 10 mesh.

13. The method of claim 10 , wherein the Si/Al ratio of ZSM-5 zeolite support is from 22 to 250.

14. The method of claim 1 , the reactor is a tubular reactor.

Assignees

• Purdue Research Foundation

Inventors

• Varma Arvind
• Xiao Yang

Classifications

• C01B2203/1241

  Natural gas or methane · CPC title

• C01B2203/1064

  Platinum group metal catalysts · CPC title

• C07C2529/48

  containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium · CPC title

• C07C2/76 Primary

  by condensation of hydrocarbons with partial elimination of hydrogen · CPC title

• C07C2529/44

  Noble metals · CPC title