Aminosilane-Functionalized Cellulosic Polymer for Increased Carbon Dioxide Sorption

Handle URI:
http://hdl.handle.net/10754/597499
Title:
Aminosilane-Functionalized Cellulosic Polymer for Increased Carbon Dioxide Sorption
Authors:
Pacheco, Diana M.; Johnson, J.R.; Koros, William J.
Abstract:
Improvement in the efficiency of CO 2 separation from flue gases is a high-priority research area to reduce the total energy cost of carbon capture and sequestration technologies in coal-fired power plants. Efficient CO 2 removal from flue gases by adsorption systems requires the design of novel sorbents capable of capturing, concentrating, and recovering CO 2 on a cost-effective basis. This paper describes the preparation of an aminosilane-functionalized cellulosic polymer sorbent with enhanced CO 2 sorption capacity and promising performance for use in postcombustion carbon capture via rapid temperature-swing adsorption systems. The introduction of aminosilane functionalities onto the backbone of cellulose acetate was achieved by the anhydrous grafting of N-(2-aminoethyl)-3- aminoisobutyldimethylmethoxysilane. The dry sorption capacity of the modified cellulosic polymer reached 27 cc (STP) CO 2/cc sorbent (1.01 mmol/g sorbent) at 1 atm and 39 cc (STP) CO 2/cc sorbent (1.46 mmol/g sorbent) at 5 atm and 308 K. The amine loading achieved was 5.18 mmol amine(nitrogen)/g sorbent. Exposure to water vapor after the first dry sorption cycle increased the dry sorption capacity of the sorbent by 12% at 1 atm, suggesting its potential for rapid cyclic adsorption processes under humid feed conditions. The CO 2 sorbent was characterized in terms of chemical composition, density changes, molecular structure, thermal stability, and surface morphology. © 2011 American Chemical Society.
Citation:
Pacheco DM, Johnson JR, Koros WJ (2012) Aminosilane-Functionalized Cellulosic Polymer for Increased Carbon Dioxide Sorption. Ind Eng Chem Res 51: 503–514. Available: http://dx.doi.org/10.1021/ie2020685.
Publisher:
American Chemical Society (ACS)
Journal:
Industrial & Engineering Chemistry Research
KAUST Grant Number:
KUS-I1-011-21
Issue Date:
11-Jan-2012
DOI:
10.1021/ie2020685
Type:
Article
ISSN:
0888-5885; 1520-5045
Sponsors:
This publication is based in part on work supported by Award No. KUS-I1-011-21, made by King Abdullah University of Science and Technology (KAUST). The authors would also like to thank the Mexico's National Council on Science and Technology (CONACYT) for their financial support in this research.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorPacheco, Diana M.en
dc.contributor.authorJohnson, J.R.en
dc.contributor.authorKoros, William J.en
dc.date.accessioned2016-02-25T12:40:56Zen
dc.date.available2016-02-25T12:40:56Zen
dc.date.issued2012-01-11en
dc.identifier.citationPacheco DM, Johnson JR, Koros WJ (2012) Aminosilane-Functionalized Cellulosic Polymer for Increased Carbon Dioxide Sorption. Ind Eng Chem Res 51: 503–514. Available: http://dx.doi.org/10.1021/ie2020685.en
dc.identifier.issn0888-5885en
dc.identifier.issn1520-5045en
dc.identifier.doi10.1021/ie2020685en
dc.identifier.urihttp://hdl.handle.net/10754/597499en
dc.description.abstractImprovement in the efficiency of CO 2 separation from flue gases is a high-priority research area to reduce the total energy cost of carbon capture and sequestration technologies in coal-fired power plants. Efficient CO 2 removal from flue gases by adsorption systems requires the design of novel sorbents capable of capturing, concentrating, and recovering CO 2 on a cost-effective basis. This paper describes the preparation of an aminosilane-functionalized cellulosic polymer sorbent with enhanced CO 2 sorption capacity and promising performance for use in postcombustion carbon capture via rapid temperature-swing adsorption systems. The introduction of aminosilane functionalities onto the backbone of cellulose acetate was achieved by the anhydrous grafting of N-(2-aminoethyl)-3- aminoisobutyldimethylmethoxysilane. The dry sorption capacity of the modified cellulosic polymer reached 27 cc (STP) CO 2/cc sorbent (1.01 mmol/g sorbent) at 1 atm and 39 cc (STP) CO 2/cc sorbent (1.46 mmol/g sorbent) at 5 atm and 308 K. The amine loading achieved was 5.18 mmol amine(nitrogen)/g sorbent. Exposure to water vapor after the first dry sorption cycle increased the dry sorption capacity of the sorbent by 12% at 1 atm, suggesting its potential for rapid cyclic adsorption processes under humid feed conditions. The CO 2 sorbent was characterized in terms of chemical composition, density changes, molecular structure, thermal stability, and surface morphology. © 2011 American Chemical Society.en
dc.description.sponsorshipThis publication is based in part on work supported by Award No. KUS-I1-011-21, made by King Abdullah University of Science and Technology (KAUST). The authors would also like to thank the Mexico's National Council on Science and Technology (CONACYT) for their financial support in this research.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleAminosilane-Functionalized Cellulosic Polymer for Increased Carbon Dioxide Sorptionen
dc.typeArticleen
dc.identifier.journalIndustrial & Engineering Chemistry Researchen
dc.contributor.institutionGeorgia Institute of Technology, Atlanta, United Statesen
kaust.grant.numberKUS-I1-011-21en
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