U.S. Department of Energy

West Virginia University

Georgia Tech Research Corporation

University of Pittsburgh

Daniel J Fauth

McMahan L Gray

Henry W Pennline

George Alan Richards

Bingyun Li

Bingbing Jiang

Eric John Beckman

Christopher W Jones

Kenneth J Champagne

James Hoffman

Kevin P Resnik

Jason C Hicks

A solid sorbent for the capture and the transport of carbon dioxide gas is provided having at least one first layer of a positively charged material that is polyethylenimine or poly(allylamine hydrochloride), that captures at least a portion of the gas, and at least one second layer of a negatively charged material that is polystyrenesulfonate or poly(acryclic acid), that transports the gas, wherein the second layer of material is in juxtaposition to, attached to, or crosslinked with the first layer for forming at least one bilayer, and a solid substrate support having a porous surface, wherein one or more of the bilayers is/are deposited on the surface of and/or within the solid substrate. A method of preparing and using the solid sorbent is provided.

Layered solid sorbents for carbon dioxide capture

Two new classes of amine-based sorbents are disclosed. The first class comprises new polymer-immobilized tertiary amine sorbents; the second class new polymer-bound amine sorbents. Both classes are tailored to facilitate removal of acid anhydrides, especially carbon dioxide (CO), from effluent gases. The amines adsorb acid anhydrides in a 1:1 molar ratio. Both classes of amine sorbents adsorb in the temperature range from about 20&#xb0; C. upwards to 90&#xb0; C. and can be regenerated by heating upwards to 100&#xb0; C.

Regenerable solid imine sorbents

The disclosure provides a COabsorption method using an amine-based solid sorbent for the removal of carbon dioxide from a gas stream. The method disclosed mitigates the impact of water loading on regeneration by utilizing a conditioner following the steam regeneration process, providing for a water loading on the amine-based solid sorbent following COabsorption substantially equivalent to the moisture loading of the regeneration process. This assists in optimizing the COremoval capacity of the amine-based solid sorbent for a given absorption and regeneration reactor size. Management of the water loading in this manner allows regeneration reactor operation with significant mitigation of energy losses incurred by the necessary desorption of adsorbed water.

[object Object]

Briefly described, embodiments of this disclosure, among others, include carbon dioxide (CO) sorption structures, methods of making COsorption structures, and methods of using COsorption structures.

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Pittsburgh, PA, United States of America

Daniel J Fauth