Dynamics of CO 2 Adsorption on Amine Adsorbents. 2. Insights Into Adsorbent Design

Handle URI:
http://hdl.handle.net/10754/598040
Title:
Dynamics of CO 2 Adsorption on Amine Adsorbents. 2. Insights Into Adsorbent Design
Authors:
Bollini, Praveen; Brunelli, Nicholas A.; Didas, Stephanie A.; Jones, Christopher W.
Abstract:
Packed bed breakthrough experiments are reported for commercial zeolite 13X and 3-aminopropyl-functionalized SBA-15 silica materials with three different amine loadings. Mass and heat transfer dynamics for all four materials are modeled successfully. Amine adsorbents with open pores are found to exhibit faster mass diffusion rates compared to zeolite 13X. When amine loading is increased by coupling aminopropyl groups, premature breakthrough combined with a long tail is observed. Contrary to conventional physisorbants, finite heat losses to the column wall do not explain the long breakthrough tail. A rate model that accounts for heterogeneity in diffusion was found to accurately capture the breakthrough shape of the high loading material. Batch uptake measurements support the hypothesis that slow diffusion through the polymer phase is what hampers adsorption kinetics in the high amine loading adsorbent. The results emphasize the importance of designing materials that are not overloaded with amine sites, as excessive amine loadings can lead to depressed adsorption kinetics and premature column breakthrough. © 2012 American Chemical Society.
Citation:
Bollini P, Brunelli NA, Didas SA, Jones CW (2012) Dynamics of CO 2 Adsorption on Amine Adsorbents. 2. Insights Into Adsorbent Design . Ind Eng Chem Res 51: 15153–15162. Available: http://dx.doi.org/10.1021/ie3017913.
Publisher:
American Chemical Society (ACS)
Journal:
Industrial & Engineering Chemistry Research
KAUST Grant Number:
KUSII-011-21
Issue Date:
21-Nov-2012
DOI:
10.1021/ie3017913
Type:
Article
ISSN:
0888-5885; 1520-5045
Sponsors:
This publication is based on work supported by Award KUSII-011-21, made by King Abdullah University of Science and Technology (KAUST). P.B. would like to thank Dr. Yoshiaki Kawajiri and his student Jason Bentley for access to gPROMS.
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Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorBollini, Praveenen
dc.contributor.authorBrunelli, Nicholas A.en
dc.contributor.authorDidas, Stephanie A.en
dc.contributor.authorJones, Christopher W.en
dc.date.accessioned2016-02-25T13:11:31Zen
dc.date.available2016-02-25T13:11:31Zen
dc.date.issued2012-11-21en
dc.identifier.citationBollini P, Brunelli NA, Didas SA, Jones CW (2012) Dynamics of CO 2 Adsorption on Amine Adsorbents. 2. Insights Into Adsorbent Design . Ind Eng Chem Res 51: 15153–15162. Available: http://dx.doi.org/10.1021/ie3017913.en
dc.identifier.issn0888-5885en
dc.identifier.issn1520-5045en
dc.identifier.doi10.1021/ie3017913en
dc.identifier.urihttp://hdl.handle.net/10754/598040en
dc.description.abstractPacked bed breakthrough experiments are reported for commercial zeolite 13X and 3-aminopropyl-functionalized SBA-15 silica materials with three different amine loadings. Mass and heat transfer dynamics for all four materials are modeled successfully. Amine adsorbents with open pores are found to exhibit faster mass diffusion rates compared to zeolite 13X. When amine loading is increased by coupling aminopropyl groups, premature breakthrough combined with a long tail is observed. Contrary to conventional physisorbants, finite heat losses to the column wall do not explain the long breakthrough tail. A rate model that accounts for heterogeneity in diffusion was found to accurately capture the breakthrough shape of the high loading material. Batch uptake measurements support the hypothesis that slow diffusion through the polymer phase is what hampers adsorption kinetics in the high amine loading adsorbent. The results emphasize the importance of designing materials that are not overloaded with amine sites, as excessive amine loadings can lead to depressed adsorption kinetics and premature column breakthrough. © 2012 American Chemical Society.en
dc.description.sponsorshipThis publication is based on work supported by Award KUSII-011-21, made by King Abdullah University of Science and Technology (KAUST). P.B. would like to thank Dr. Yoshiaki Kawajiri and his student Jason Bentley for access to gPROMS.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleDynamics of CO 2 Adsorption on Amine Adsorbents. 2. Insights Into Adsorbent Designen
dc.typeArticleen
dc.identifier.journalIndustrial & Engineering Chemistry Researchen
dc.contributor.institutionGeorgia Institute of Technology, Atlanta, United Statesen
kaust.grant.numberKUSII-011-21en
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