System and method for carbon dioxide capture and sequestration utilizing an improved substrate structure

Abstract

A structure and system for the adsorption of carbon dioxide from air, the system comprising a sorbent structure comprising a porous substrate having a porous alumina coating on the surfaces of said substrate, and the sorbent for carbon dioxide is embedded on the surfaces of said porous alumina coating. The substrate is preferably a porous monolith, formed from silica or mesocellular foam. The sorbent is an amine group-containing material, preferably loaded at 40 to 60 percent by volume relative to the porous alumina coating.

The following invention is claimed: 
     
         1 . A system for the adsorption of carbon dioxide from air, the system comprising a sorbent structure comprising a substrate having an alumina coating on the surfaces of said substrate and sorbent for carbon dioxide embedded on said alumina coating. 
     
     
         2 . A sorbent structure comprising a substrate having an alumina coating on the surfaces of said substrate and sorbent embedded on said alumina coating. 
     
     
         3 . The sorbent structure of  claim 2  wherein said substrate is a monolith. 
     
     
         4 . The sorbent structure of  claim 3  wherein said monolith is silica or mesocellular foam. 
     
     
         5 . The sorbent structure of  claim 2  wherein said sorbent is an amine group-containing material. 
     
     
         6 . The sorbent structure of  claim 5  wherein said amine-group containing material is loaded at 40 to 60 percent by volume relative to the alumina coating.