Low Cost Immobilized Amine Regenerable Solid Sorbents
First Claim
1. A method of modifying a chemical interaction between i) an amine functional group of an immobilized amine in a solid sorbent composition, and, ii) a gaseous compound that chemically interacts with the amine functional group, by causing the adsorption of the gaseous compound on the immobilized amines in the presence of an alcohol species.
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Abstract
A method of modifying a chemical interaction between a functional group of an immobilized amine in a solid sorbent composition and a compound that chemically interacts with the functional group to reduce the heat required to desorb the compound from the solid sorbent. A method of inhibiting degradation of an immobilized amine in an immobilized amine solid sorbent. Compositions and methods of use of a low-cost regenerable immobilized amine solid sorbent resistant to degradation.
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Citations
20 Claims
- 1. A method of modifying a chemical interaction between i) an amine functional group of an immobilized amine in a solid sorbent composition, and, ii) a gaseous compound that chemically interacts with the amine functional group, by causing the adsorption of the gaseous compound on the immobilized amines in the presence of an alcohol species.
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5. A method comprising:
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a. inhibiting degradation of amine functional groups of an immobilized amine in a solid sorbent composition b. by including an inorganic base in the solid sorbent composition.
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6. A regenerable immobilized amine solid sorbent composition comprising:
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a. a solid support particle, b. an immobilized amine, i. wherein the immobilized amine comprises an adhesive and an amine susceptible to adsorbing a compound, c. an alcohol species capable of lowering the threshold temperature for dissociation of a bond between the compound and the immobilized amine, and; d. an inorganic base. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of removing a compound from a gas stream comprising:
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a. employing a regenerable solid sorbent in the gas stream, wherein the regenerable solid sorbent comprises, i. an immobilized amine susceptible to chemosorbing the compound, ii. an alcohol species capable of lowering the threshold temperature for dissociation of the bond between the compound and the amine, and iii. an inorganic base, b. allowing the regenerable solid sorbent to adsorb the compound from the gas stream, and; c. heating the solid sorbent to a temperature above the threshold temperature for dissociation of the bond between the adsorbed compound and the immobilized amine, but below the threshold temperature for dissociation of the immobilized amine. - View Dependent Claims (13, 14)
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15. A method of preparing a dual immobilized amine regenerable solid sorbent for adsorbing a first compound and a second compound, comprising:
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a. impregnating into pores of a solid support a first composition comprising, i. a first amine susceptible to chemosorbing the first compound, ii. an adhesive, iii. an alcohol species capable of lowering the threshold temperature for dissociation of the bond between the first compound and the first amine, and iv. an inorganic base, b. optionally partially filling the pores with a solvent after impregnating the pores with the first composition, c. treating the resultant solid support with a second composition comprising, i. a second amine susceptible to chemosorbing the second compound, ii. an adhesive, iii. an alcohol species capable of lowering the threshold temperature for dissociation of the bond between the second compound and the second amine, and, iv. an inorganic base, and; d. optionally, removing the solvent from the pores. - View Dependent Claims (16, 17)
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18. A dual immobilized amine regenerable solid sorbent composition, comprising:
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a. solid support particles having pores, pore mouths and a non-porous surface area, b. wherein the pores contain a composition of a first amine susceptible to chemosorbing a first compound, an alcohol species capable of lowering the threshold temperature for dissociation of a bond between the first compound and the first amine, an adhesive, and an inorganic base, and; c. wherein the pore mouths and non-porous surface area contain a composition of a second amine susceptible to chemosorbing a second compound, an alcohol species capable of lowering the threshold temperature for dissociation of a bond between the second compound and the second amine, an adhesive, and an inorganic base. - View Dependent Claims (19, 20)
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Specification