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Title: Solid sorbents for removal of carbon dioxide from gas streams at low temperatures

Abstract

New low-cost CO.sub.2 sorbents are provided that can be used in large-scale gas-solid processes. A new method is provided for making these sorbents that involves treating substrates with an amine and/or an ether so that the amine and/or ether comprise at least 50 wt. percent of the sorbent. The sorbent acts by capturing compounds contained in gaseous fluids via chemisorption and/or physisorption between the unit layers of the substrate's lattice where the polar amine liquids and solids and/or polar ether liquids and solids are located. The method eliminates the need for high surface area supports and polymeric materials for the preparation of CO.sub.2 capture systems, and provides sorbents with absorption capabilities that are independent of the sorbents' surface areas. The sorbents can be regenerated by heating at temperatures in excess of 35.degree. C.

Inventors:
Issue Date:
Research Org.:
US Department of Energy (USDOE), Washington, DC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
949195
Patent Number(s):
6908497
Application Number:
10/420,713
Assignee:
The United States of America as represented by the Department of Energy (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
Resource Type:
Patent
Resource Relation:
Patent File Date: 2003 Apr 23
Country of Publication:
United States
Language:
English

Citation Formats

Sirwardane, Ranjani V. Solid sorbents for removal of carbon dioxide from gas streams at low temperatures. United States: N. p., 2005. Web.
Sirwardane, Ranjani V. Solid sorbents for removal of carbon dioxide from gas streams at low temperatures. United States.
Sirwardane, Ranjani V. Tue . "Solid sorbents for removal of carbon dioxide from gas streams at low temperatures". United States. https://www.osti.gov/servlets/purl/949195.
@article{osti_949195,
title = {Solid sorbents for removal of carbon dioxide from gas streams at low temperatures},
author = {Sirwardane, Ranjani V.},
abstractNote = {New low-cost CO.sub.2 sorbents are provided that can be used in large-scale gas-solid processes. A new method is provided for making these sorbents that involves treating substrates with an amine and/or an ether so that the amine and/or ether comprise at least 50 wt. percent of the sorbent. The sorbent acts by capturing compounds contained in gaseous fluids via chemisorption and/or physisorption between the unit layers of the substrate's lattice where the polar amine liquids and solids and/or polar ether liquids and solids are located. The method eliminates the need for high surface area supports and polymeric materials for the preparation of CO.sub.2 capture systems, and provides sorbents with absorption capabilities that are independent of the sorbents' surface areas. The sorbents can be regenerated by heating at temperatures in excess of 35.degree. C.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 21 00:00:00 EDT 2005},
month = {Tue Jun 21 00:00:00 EDT 2005}
}

Works referenced in this record:

Reversible adsorption of carbon dioxide on amine surface-bonded silica gel
journal, December 1995