Patent ID: 8900435
Filing Date: 2014-12-02
Classification: B01D,B01J

Abstract:
1. A system to separate carbon dioxide from a gas comprising: a cathodic component and an anodic component with a region between them and structured such that, with oxygen and carbon dioxide at the cathodic component and hydrogen-containing molecules that can provide protons at the anodic component, reactions occur producing carbon-containing ions; the carbon-containing ions transporting from the cathodic component to the anodic component and reacting at the anodic component to form carbon dioxide; and an ion exchange component comprising one or more ion exchange sites between the cathodic component and the anodic component, the ion exchange component comprising a polymer having at least one fixed charge, and at least one functional group chosen from at least one weak Lewis base capable of forming hydrogen bonds with hydroxyl ions, the ion exchange sites being configured to permit transport of the carbon-containing ions between the cathodic component and the anodic component, wherein the at least one fixed charge is sufficient to exclude or block ions of the same charge.