Aromatic amino compounds for carbon dioxide and sulfur dioxide removal

1. A method for the removal of CO 2 and/or SO 2 from a gaseous mixture comprising contacting the gaseous mixture with a liquid or solid material comprising one or more compounds represented by the structure of the Formula I:

and removing CO 2 and/or SO 2 from the mixture;

wherein the Formula I compound is in the form of a salt formed with the acid HX, which acid has an acidic proton;

wherein the removal of one or more of CO 2 and/or SO 2 from the gaseous mixture occurs in a removal apparatus;

wherein, in the removal apparatus, one or more of CO 2 and/or SO 2 is dissolved into a compound of Formula I to form (i) a purified fraction that is depleted in one or more of CO 2 and/or SO 2 content, and (ii) a solvent fraction that is enriched in one or more of CO 2 and/or SO 2 content; and

wherein the solvent fraction is separated from the removal apparatus.

2. The method of claim 1 wherein one or more of CO 2 and/or SO 2 is separated from the solvent fraction to form a rectified solvent fraction, and the rectified solvent fraction is returned to the removal apparatus.

3. The method of claim 1 wherein CO 2 is removed from the gaseous mixture.

4. The method of claim 1 wherein the Formula I compound comprises ortho-phenylene diamine.

5. The method of claim 1 wherein the Formula I compound comprises meta-phenylene diamine.

6. The method of claim 1 wherein the Formula I compound comprises para-phenylene diamine.

7. The method of claim 1 wherein an acid is selected from the group consisting of a mineral acid and a carboxylic acid.

8. The method of claim 1 wherein SO 2 is removed from the gaseous mixture.

9. The method of claim 1 wherein CO 2 and/or SO 2 is removed from the mixture in a counter-current liquid absorber, in a cyclone scrubber, in a supported liquid membrane, or in a fixed bed.

10. A method for the removal of CO 2 and/or SO 2 from a gaseous mixture comprising contacting the gaseous mixture with a liquid or solid material without dilution of the liquid or solid material;

wherein the liquid or solid material comprises one or more compounds represented by the structure of the Formula I:

and removing CO 2 and/or SO 2 from the gaseous mixture.

11. The method of claim 10 wherein the Formula I compound comprises ortho-phenylene diamine.

12. The method of claim 10 wherein the Formula I compound comprises meta-phenylene diamine.

13. The method of claim 10 wherein the Formula I compound comprises para-phenylene diamine.

14. The method of claim 10 wherein CO 2 is removed from the gaseous mixture.

15. The method of claim 10 wherein SO 2 is removed from the gaseous mixture.

16. The method of claim 10 wherein CO 2 and/or SO 2 is removed from the gaseous mixture in a counter current liquid absorber, in a cyclone scrubber, in a supported liquid membrane, or in a fixed bed.

17. The method of claim 10 that further comprises removing CO 2 and/or SO 2 from the gaseous mixture along with liquid or solid material, and separating CO 2 and/or SO 2 from the liquid or solid material.