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Title: High performance hydrophobic solvent, carbon dioxide capture

Abstract

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:
;
Publication Date:
Research Org.:
CARNEGIE MELLON UNIVERSITY, Pittsburgh, PA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1356297
Patent Number(s):
9,643,123
Application Number:
14/525,011
Assignee:
CARNEGIE MELLON UNIVERSITY NETL
DOE Contract Number:  
FE0004000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Oct 27
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Nulwala, Hunaid, and Luebke, David. High performance hydrophobic solvent, carbon dioxide capture. United States: N. p., 2017. Web.
Nulwala, Hunaid, & Luebke, David. High performance hydrophobic solvent, carbon dioxide capture. United States.
Nulwala, Hunaid, and Luebke, David. Tue . "High performance hydrophobic solvent, carbon dioxide capture". United States. doi:. https://www.osti.gov/servlets/purl/1356297.
@article{osti_1356297,
title = {High performance hydrophobic solvent, carbon dioxide capture},
author = {Nulwala, Hunaid and Luebke, David},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 09 00:00:00 EDT 2017},
month = {Tue May 09 00:00:00 EDT 2017}
}

Patent:

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