Method, synthesis, activation procedure and characterization of an oxygen rich activated porous carbon sorbent for selective removal of carbon dioxide with ultra high capacity

Patent metadata

Field	Value
Publication number	US-2017304801-A1
Application number	US-201715631341-A
Country	US
Kind code	A1
Filing date	Jun 23, 2017
Priority date	Jul 1, 2015
Publication date	Oct 26, 2017
Grant date	—

Abstract

The present disclosure pertains to materials for CO 2 adsorption at pressures above 1 bar, where the materials include a porous material with a surface area of at least 2,800 m 2 /g, and a total pore volume of at least 1.35 cm 3 /g, where a majority of pores of the porous material have diameters of less than 2 nm as measured from N 2 sorption isotherms using the BET (Brunauer-Emmett-Teller) method. The present disclosure also pertains to materials for separation of CO 2 from natural gas at partial pressures of either component above 1 bar, where the materials include a porous material with a surface area of at least 2,200 m 2 /g, and a total pore volume of at least 1.00 cm 3 /g, where a majority of pores of the porous material have diameters of greater than 1 nm and less than 2 nm as measured from N 2 sorption isotherms using the BET method.

First claim

What is claimed is:

1 . A material for CO 2 adsorption at pressures above 1 bar comprising:
a porous material with a surface area of at least 2,800 m 2 /g, and a total pore volume of at least 1.35 cm 3 /g,
wherein a majority of pores of the porous material have diameters of less than 2 nm as measured from N 2 sorption isotherms using the BET (Brunauer-Emmett-Teller) method.

2 . The material of claim 1 , wherein the porous material comprises a porous carbon material with a carbon content of between 80% and 95% as measured by X-ray photoelectron spectroscopy.

3 . The material of claim 2 , wherein the porous carbon material is prepared by heating an organic polymer precursor or biological material in the presence of KOH, wherein the temperature of activation is between 700° C. and 800° C.

4 . The material of claim 3 , wherein the organic polymer precursor or biological material comprises oxygen in a functional group.

5 . The material of claim 4 , wherein the functional group comprises a furyl.

6 . The material of claim 5 , wherein the organic polymer precursor polymerizes to form polyfurfuryl alcohol.

7 . The material of claim 6 , wherein the polyfurfuryl alcohol is prepared by the polymerization of furfuryl alcohol with a catalyst.

8 . The material of claim 7 , wherein the catalyst comprises iron(III) chloride.

9 . The material of claim 3 , wherein the biological material is chosen from at least one of the following: sawdust and coconut husk.

10 . The material of claim 4 , wherein the functional group comprises an anisyl.

11 . The material of claim 10 , wherein the organic polymer precursor polymerizes to form polyanisyl alcohol.

12 . The material of claim 11 , wherein the polyanisyl alcohol is prepared by the polymerization of anisyl alcohol with a catalyst.

13 . The material of claim 12 , wherein the catalyst comprises a protic acid.

14 . A material for the separation of CO 2 from natural gas at partial pressures of either component above 1 bar comprising:
a porous material with a surface area of at least 2,200 m 2 /g, and a total pore volume of at least 1.00 cm 3 /g,
wherein a majority of pores of the porous material have diameters of greater than 1 nm and less than 2 nm as measured from N 2 sorption isotherms using the BET (Brunauer-Emmett-Teller) method.

15 . The material of claim 14 , wherein the porous material comprises a porous carbon material with a carbon content of between 80% and 95% as measured by X-ray photoelectron spectroscopy.

16 . The material of claim 15 , wherein the porous carbon material is prepared by heating an organic polymer precursor or biological material in the presence of KOH, wherein the temperature of activation is between 700° C. and 800° C.

17 . The material of claim 16 , wherein the organic polymer precursor comprises oxygen in a functional group.

18 . The material of claim 17 , wherein the functional group comprises a furyl.

19 . The material of claim 18 , wherein the organic polymer precursor polymerizes to form polyfurfuryl alcohol.

20 . The material of claim 19 , wherein the polyfurfuryl alcohol is prepared by the polymerization of furfuryl alcohol with a catalyst.

21 . The material of claim 20 , wherein the catalyst comprises iron(III) chloride.

22 . The material of claim 16 , wherein the biological material is chosen from at least one of the following: sawdust and coconut husk.

23 . The material of claim 17 , wherein the functional group comprises an anisyl.

24 . The material of claim 23 , wherein the organic polymer precursor polymerizes to form polyanisyl alcohol.

25 . The material of claim 24 , wherein the polyanisyl alcohol is prepared by the polymerization of anisyl alcohol with a catalyst.

26 . The material of claim 25 , wherein the catalyst comprises a protic acid.

Assignees

• Univ Rice William M
• Apache Corp

Inventors

• Ghosh Saunab
• Barron Andrew R
• Ho Jason

Classifications

• B01J20/3078

  Thermal treatment, e.g. calcining or pyrolizing · CPC title

• B01J20/20 Primary

  comprising free carbon; comprising carbon obtained by carbonising processes · CPC title

• B01J20/28076

  being more than 1.0 ml/g · CPC title

• B01J20/28066

  being more than 1000 m2/g · CPC title

• B01D53/04

  with stationary adsorbents {(B01D53/025 takes precedence)} · CPC title