High performance hydrophobic solvent, carbon dioxide capture

Title: High performance hydrophobic solvent, carbon dioxide capture

Methods and compositions useful, for example, for physical solvent carbon capture. A method comprising: contacting at least one first composition comprising carbon dioxide with at least one second composition to at least partially dissolve the carbon dioxide of the first composition in the second composition, wherein the second composition comprises at least one siloxane compound which is covalently modified with at least one non-siloxane group comprising at least one heteroatom. Polydimethylsiloxane (PDMS) materials and ethylene-glycol based materials have high carbon dioxide solubility but suffer from various problems. PDMS is hydrophobic but suffers from low selectivity. Ethylene-glycol based systems have good solubility and selectivity, but suffer from high affinity to water. Solvents were developed which keep the desired combinations of properties, and result in a simplified, overall process for carbon dioxide removal from a mixed gas stream.

Inventors:: Nulwala, Hunaid; Luebke, David

Issue Date:: 2017-05-09

OSTI Identifier:: 1356297

Assignee:: CARNEGIE MELLON UNIVERSITY NETL

Patent Number(s):: 9,643,123

Application Number:: 14/525,011

Contract Number:: FE0004000

Resource Relation:: Patent File Date: 2014 Oct 27

Research Org:: CARNEGIE MELLON UNIVERSITY, Pittsburgh, PA (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

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