Amine-oxide adsorbents for post-combustion CO₂ capture

Amine functionalized silicas are promising chemisorbent materials for post-combustion CO₂ capture due to the high density of active sites per unit mass of adsorbent that can be obtained by tuning the synthesis protocol, thus resulting in high equilibrium CO₂ adsorption capacities. However, when comp...

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Main Author: Bollini, Praveen P.
Other Authors: Jones, Christopher W.
Format: Others
Language:en_US
Published: Georgia Institute of Technology 2015
Subjects:
Online Access:http://hdl.handle.net/1853/52908
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spelling ndltd-GATECH-oai-smartech.gatech.edu-1853-529082015-02-05T15:35:10ZAmine-oxide adsorbents for post-combustion CO₂ captureBollini, Praveen P.AdsorptionCO₂ captureMesoporous materialsAmineAmine functionalized silicas are promising chemisorbent materials for post-combustion CO₂ capture due to the high density of active sites per unit mass of adsorbent that can be obtained by tuning the synthesis protocol, thus resulting in high equilibrium CO₂ adsorption capacities. However, when compared to physisorbents, they have a few disadvantages. Firstly, oxidative degradation of the amine groups reduces the lifetime of these adsorbent materials. Furthermore, rapid heat release following the reaction between amines and CO₂ results in large local temperature spikes which may adversely affect adsorption equilibria and kinetics. Thirdly, there is a lack of fundamental understanding of CO₂-amine adsorption thermodynamics, which is key to scaling up these materials to an industrial-scale adsorption process. In this dissertation the qualitative and quantitative understanding of these three critical aspects of aminosilica adsorbents have been furthered so these materials can be better evaluated and further tuned as adsorbents for post-combustion CO₂ capture applications.Georgia Institute of TechnologyJones, Christopher W.2015-01-12T20:27:32Z2015-01-13T06:30:04Z2013-122013-08-02December 20132015-01-12T20:27:32ZDissertationapplication/pdfhttp://hdl.handle.net/1853/52908en_US
collection NDLTD
language en_US
format Others
sources NDLTD
topic Adsorption
CO₂ capture
Mesoporous materials
Amine
spellingShingle Adsorption
CO₂ capture
Mesoporous materials
Amine
Bollini, Praveen P.
Amine-oxide adsorbents for post-combustion CO₂ capture
description Amine functionalized silicas are promising chemisorbent materials for post-combustion CO₂ capture due to the high density of active sites per unit mass of adsorbent that can be obtained by tuning the synthesis protocol, thus resulting in high equilibrium CO₂ adsorption capacities. However, when compared to physisorbents, they have a few disadvantages. Firstly, oxidative degradation of the amine groups reduces the lifetime of these adsorbent materials. Furthermore, rapid heat release following the reaction between amines and CO₂ results in large local temperature spikes which may adversely affect adsorption equilibria and kinetics. Thirdly, there is a lack of fundamental understanding of CO₂-amine adsorption thermodynamics, which is key to scaling up these materials to an industrial-scale adsorption process. In this dissertation the qualitative and quantitative understanding of these three critical aspects of aminosilica adsorbents have been furthered so these materials can be better evaluated and further tuned as adsorbents for post-combustion CO₂ capture applications.
author2 Jones, Christopher W.
author_facet Jones, Christopher W.
Bollini, Praveen P.
author Bollini, Praveen P.
author_sort Bollini, Praveen P.
title Amine-oxide adsorbents for post-combustion CO₂ capture
title_short Amine-oxide adsorbents for post-combustion CO₂ capture
title_full Amine-oxide adsorbents for post-combustion CO₂ capture
title_fullStr Amine-oxide adsorbents for post-combustion CO₂ capture
title_full_unstemmed Amine-oxide adsorbents for post-combustion CO₂ capture
title_sort amine-oxide adsorbents for post-combustion co₂ capture
publisher Georgia Institute of Technology
publishDate 2015
url http://hdl.handle.net/1853/52908
work_keys_str_mv AT bollinipraveenp amineoxideadsorbentsforpostcombustionco2capture
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