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Title: Method of preparation of a CO.sub.2 removal sorbent with high chemical stability during multiple cycles

Abstract

Method for the production of a clay-alkali-amine CO.sub.2 sorbent 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 substrate and basic alkali salt may be combined in a solid-solid heterogeneous mixture and followed by introduction of the amine liquid. Alternatively, an alkaline solution may be blended with the amine solution prior to contacting the clay substrate. The clay-alkali-amine CO.sub.2 sorbent is particularly advantageous for low temperature CO.sub.2 removal cycles in a gas stream having a CO.sub.2 concentration less than around 2000 ppm and an oxygen concentration around 21%, such as air. Results are presented illustrating the performance of the clay-alkali-amine CO.sub.2 sorbent compared to a clay-amine sorbent lacking the alkali inclusion.

Inventors:
;
Issue Date:
Research Org.:
U.S. Department of Energy, Washington, DC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1193395
Patent Number(s):
9,079,160
Application Number:
13/867,192
Assignee:
U.S. Department of Energy (Washington, DC)
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Apr 22
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES

Citation Formats

Siriwardane, Ranjani V., and Rosencwaig, Shira. Method of preparation of a CO.sub.2 removal sorbent with high chemical stability during multiple cycles. United States: N. p., 2015. Web.
Siriwardane, Ranjani V., & Rosencwaig, Shira. Method of preparation of a CO.sub.2 removal sorbent with high chemical stability during multiple cycles. United States.
Siriwardane, Ranjani V., and Rosencwaig, Shira. Tue . "Method of preparation of a CO.sub.2 removal sorbent with high chemical stability during multiple cycles". United States. https://www.osti.gov/servlets/purl/1193395.
@article{osti_1193395,
title = {Method of preparation of a CO.sub.2 removal sorbent with high chemical stability during multiple cycles},
author = {Siriwardane, Ranjani V. and Rosencwaig, Shira},
abstractNote = {Method for the production of a clay-alkali-amine CO.sub.2 sorbent 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 substrate and basic alkali salt may be combined in a solid-solid heterogeneous mixture and followed by introduction of the amine liquid. Alternatively, an alkaline solution may be blended with the amine solution prior to contacting the clay substrate. The clay-alkali-amine CO.sub.2 sorbent is particularly advantageous for low temperature CO.sub.2 removal cycles in a gas stream having a CO.sub.2 concentration less than around 2000 ppm and an oxygen concentration around 21%, such as air. Results are presented illustrating the performance of the clay-alkali-amine CO.sub.2 sorbent compared to a clay-amine sorbent lacking the alkali inclusion.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {7}
}

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