Amine enriched solid sorbents for carbon dioxide capture
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsMcMahan L. Gray, Yee Soong, Kenneth J. Champagne
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Abstract
A new method for making low-cost CO2 sorbents that can be used in large-scale gas-solid processes. The new method entails treating a solid substrate with acid or base and simultaneous or subsequent treatment with a substituted amine salt. The method eliminates the need for organic solvents and polymeric materials for the preparation of CO2 capture systems.
Claims15
A method for producing an amine-enriched sorbent which comprises:
- (a) treating an oxidized surface with base, and;
- (b) contacting the treated surface with a substituted amine hydrogen halide, wherein the substituted amine contains one or more moieties selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, allyl, vinyl, cyclopentyl, cyclohexyl, phenyl, naphtyl, and combinations thereof.
A process for producing an amine-enriched sorbent which comprises treating a surface with a substituted amine hydrogen halide in the presence of a catalyst, where the catalyst is an acid selected from the group consisting of hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, perchloric acid, and nitric acid and having a concentration of between 0.1 M and 5.0 M.
Dependencies are inferred from the claim text.