Article for carbon dioxide capture

• US 8,801,834 B2
• Filed: 02/15/2012
• Issued: 08/12/2014
• Est. Priority Date: 02/28/2011
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Addiego, William Peter, Bennett, Michael John
• Primary Examiner(s): Jones, Christopher P
• Application Number:
  US13/397,127
• Publication Number:
  US 20120216676A1
• Time in Patent Office: 909 Days
• Field of Search: 951/39, 961/08
• US Class Current: 95/139
• CPC Class Codes: B01D 2253/104 Alumina
• CPC Class Codes: B01D 2253/202 Polymeric adsorbents
• CPC Class Codes: B01D 2253/25 Coated, impregnated or composite adsorbents
• CPC Class Codes: B01D 2253/306 Surface area, e.g. BET-specific surface
• CPC Class Codes: B01D 2253/311 Porosity, e.g. pore volume
• CPC Class Codes: B01D 2253/3425 Honeycomb shape
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 53/02 by adsorption, e.g. preparative gas chromatography solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01
• CPC Class Codes: B01J 20/08 comprising aluminium oxide or hydroxide; comprising bauxite
• CPC Class Codes: B01J 20/28045 Honeycomb or cellular structures; Solid foams or sponges
• CPC Class Codes: B01J 20/28054 characterised by their surface properties or porosity
• CPC Class Codes: B01J 20/28057 Surface area, e.g. B.E.T specific surface area
• CPC Class Codes: B01J 20/3204 Inorganic carriers, supports or substrates
• CPC Class Codes: B01J 20/3272 Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

An article having a flow-through substrate having open channels defined by porous walls, wherein the flow-through substrate includes alumina; and a CO₂ sorbent disposed on the flow-through substrate, wherein the CO₂ sorbent impregnates the porous walls of the flow-through substrate. Methods of making the article, its use for CO₂ capture, and methods for regenerating the article for further use are also disclosed.

Claims

1. An article for removing CO₂ from a gas, the article comprising:

a flow-through substrate comprising open channels defined by porous walls;

wherein the flow-through substrate comprises activated alumina; and

a CO₂ sorbent disposed on the flow-through substrate;

wherein the CO₂ sorbent impregnates the porous walls of the flow-through substrate;

wherein the porous walls of the flow-through substrate have a porosity of at least 50%; and

wherein the flow-through substrate comprises gamma alumina.

2. The article of claim 1, wherein the article is capable of sorbing CO₂ at a first temperature and desorbing at least a portion of the sorbed CO₂ at a second temperature.

3. The article of claim 2, wherein the porous walls of the flow-through substrate have a surface area greater than 200 m2/g.

4. The article of claim 2, wherein the flow-through substrate is honeycomb shaped.

5. The article of claim 2, wherein the CO₂ sorbent comprises a polyethyleneimine.

6. The article of claim 1, wherein the porous walls of the flow-through substrate have a surface area greater than 200 m2/g.

7. The article of claim 6, wherein the flow-through substrate is honeycomb shaped.

8. The article of claim 1, wherein the flow-through substrate is honeycomb shaped.

9. The article of claim 1, wherein the flow-through substrate is honeycomb shaped.

10. The article of claim 1, wherein the CO₂ sorbent comprises a polyethyleneimine.

11. A method of making the article of claim 1, the method comprising:

preparing a solution of CO₂ sorbent dispersed in a solvent;

contacting a flow-through substrate comprising channels defined by porous walls with the solution.

12. A method of removing CO₂ from a gas, the method comprising:

providing an article according to claim 1;

contacting the article with a gas comprising CO₂, wherein the contacting occurs at a temperature of up to 40°

C.

13. The method of claim 12, further comprising a step of desorbing CO₂ from the article, comprising heating the article to a temperature above the desorption temperature of the CO₂.