CO.sub.2 removal sorbent composition with high chemical stability during multiple cycles

Title: CO.sub.2 removal sorbent composition with high chemical stability during multiple cycles

Disclosed herein is a clay-alkali-amine CO.sub.2 sorbent composition prepared by integrating a clay substrate, basic alkali salt, and amine liquid. The basic alkali salt is present relative to the clay substrate in a weight ratio of from about 1 part to about 50 parts per 100 parts of the clay substrate. The amine liquid is present relative to a clay-alkali combination in a weight ratio of from about 1 part to about 10 parts per 10 parts of the clay-alkali combination. The clay-alkali-amine C02 sorbent is particularly advantageous for low temperature CO.sub.2 removal cycles in a gas stream having a C02 concentration less than around 2000 ppm and an oxygen concentration around 21%, such as air.

Inventors:: Siriwardane, Ranjani V.; Rosencwaig, Shira

Issue Date:: 2015-09-22

OSTI Identifier:: 1221398

Assignee:: U.S. Department of Energy (Washington, DC) NETL

Patent Number(s):: 9,138,683

Application Number:: 14/297,848

Resource Relation:: Patent File Date: 2014 Jun 06

Research Org:: National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES

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Other works cited in this record:

CO₂ Removal from gaseous streams
patent, February 1984

Slaugh, Lynn; Willis, Carl
US Patent Document 4,433,981
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN/4433981

Carbon dioxide pressure swing adsorption process using modified alumina adsorbents
patent, June 1999

Gaffney, Thomas; Golden, Timothy; Mayorga, Steven
US Patent Document 5,917,136
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN/5917136

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