Epoxy-amine acid gas adsorption-desorption polymers and oligomers, processes for preparing same, and uses thereof
First Claim
1. An acid gas adsorption-desorption material comprising a crosslinked epoxy-amine material having a weight average molecular weight of from about 500 to about 1×
- 106, a total pore volume of from about 0.2 cubic centimeters per gram (cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorption-desorption material.
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Abstract
This disclosure involves an adsorption-desorption material, e.g., crosslinked epoxy-amine material having an Mw from about 500 to about 1×106, a total pore volume from about 0.2 cc/g to about 2.0 cc/g, and a CO2 adsorption capacity of at least about 0.2 millimoles CO2 per gram of crosslinked material, and/or linear epoxy-amine material having an Mw from about 160 to about 1×106, a total pore volume from about 0.2 cc/g to about 2.0 cc/g, and a CO2 adsorption capacity of at least about 0.2 millimoles CO2 per gram of linear material. This disclosure also involves processes for preparing the crosslinked epoxy-amine materials and linear epoxy-amine materials, as well as selective removal of CO2 and/or other acid gases from a gaseous stream using the epoxy-amine materials.
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Citations
36 Claims
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1. An acid gas adsorption-desorption material comprising a crosslinked epoxy-amine material having a weight average molecular weight of from about 500 to about 1×
- 106, a total pore volume of from about 0.2 cubic centimeters per gram (cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorption-desorption material.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An acid gas adsorption-desorption material comprising a linear epoxy-amine material having a weight average molecular weight of from about 140 to about 1×
- 106, a total pore volume of from about 0.2 cubic centimeters per gram (cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorption-desorption material.
- View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A process for preparing an acid gas adsorption-desorption material comprising a crosslinked epoxy-amine material having a weight average molecular weight of from about 500 to about 1×
- 106, a total pore volume of from about 0.2 cubic centimeters per gram (cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorption-desorption material;
said process comprising (i) reacting at least one epoxy material with at least one amine material under conditions sufficient to produce an epoxy-amine material, and (ii) crosslinking said epoxy-amine material under conditions sufficient to produce said crosslinked epoxy-amine material. - View Dependent Claims (21, 22)
- 106, a total pore volume of from about 0.2 cubic centimeters per gram (cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorption-desorption material;
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23. A process for preparing an acid gas adsorption-desorption material comprising a linear epoxy-amine material having a weight average molecular weight of from about 140 to about 1×
- 106, a total pore volume of from about 0.2 cubic centimeters per gram (cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorption-desorption material;
said process comprising reacting an epoxy material with an amine material under conditions sufficient to produce said linear epoxy-amine material. - View Dependent Claims (24, 25)
- 106, a total pore volume of from about 0.2 cubic centimeters per gram (cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorption-desorption material;
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26. A method for adsorption-desorption of an acid gas comprising:
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contacting a gas mixture containing at least one acid gas with an adsorbent material under conditions sufficient to cause adsorption of at least a portion of said acid gas, said adsorbent material selected from the group consisting of;
(i) a crossiiriked epoxy-amine material having a weight average molecular weight of from about 500 to about 1×
106, a total pore volume of from about 0.2 cubic centimeters per gram cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorbent material, and (ii) a linear epoxy-amine material having a weight average molecular weight of from about 140 to about 1×
106, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorbent material; andtreating said adsorbent material under conditions sufficient to cause desorption of at least a portion of said acid gas. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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33. A method of separating carbon dioxide from a gas mixture comprising;
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providing at least one adsorption zone comprising an adsorbent, said adsorbent selected from the group consisting of;
(i) a cross linked epoxy-amine material having a weight average molecular weight of from about 500 to about 1×
106, a total pore volume of from about 0.2 cubic centimeters per gram (cc/g) to about 2.0 cc/g, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorbent material, and (ii) a linear epoxy-amine material having a weight average molecular weight of from about 140 to about 1×
106, and an adsorption capacity of at least about 0.2 millimoles of CO2 adsorbed per gram of adsorbent material;passing said gas mixture comprising at least carbon dioxide through said at least one adsorption zone, wherein said adsorbent adsorbs at least part of the carbon dioxide from the mixture to provide a carbon dioxide-depleted gas; and regenerating said adsorbent by desorbing a carbon dioxide-rich gas. - View Dependent Claims (34, 35, 36)
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Specification