Abstract
Ethylenediamine was grafted onto a polystyrene surface to study the relationship between amine density and amine efficiency. Amine-tethered polystyrene was synthesized in two steps: (1) chloromethylation and (2) amination. The products were characterized by argentometry, N2 physisorption, thermogravimetric analysis, X-ray diffraction, and FT-IR spectroscopy. The amine efficiency declined drastically when the amine density was less than 1 amine molecule per nm2, because formation of ammonium carbamate is difficult under such conditions. A double-functionalization method was introduced to improve the CO2 uptake and amine efficiency of the amine-grafted sorbent by impregnating more amino groups into the porous structure. The combination of grafted and mobile amino groups led to a synergic effect, resulting in a CO2 uptake of up to 20.2 wt% at 30 °C and 1 bar CO2. It was concluded that double-functionalization with tetraethylenepentamine was advantageous for enhancing the amine efficiency, whereas double-functionalization with polyethyleneimine was advantageous for enhancing the cyclic stability of the sorbent.
| Original language | English |
|---|---|
| Pages (from-to) | 1317-1322 |
| Number of pages | 6 |
| Journal | Bulletin of the Chemical Society of Japan |
| Volume | 88 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2015 |
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ASJC Scopus subject areas
- Chemistry(all)
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Effect of amine surface density on CO2 adsorption behaviors of amine-functionalized polystyrene. / Jo, Dong Hyun; Lee, Chang Hun; Jung, Hyunchul; Jeon, Sunbin; Kim, Sung Hyun.
In: Bulletin of the Chemical Society of Japan, Vol. 88, No. 9, 2015, p. 1317-1322.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of amine surface density on CO2 adsorption behaviors of amine-functionalized polystyrene
AU - Jo, Dong Hyun
AU - Lee, Chang Hun
AU - Jung, Hyunchul
AU - Jeon, Sunbin
AU - Kim, Sung Hyun
PY - 2015
Y1 - 2015
N2 - Ethylenediamine was grafted onto a polystyrene surface to study the relationship between amine density and amine efficiency. Amine-tethered polystyrene was synthesized in two steps: (1) chloromethylation and (2) amination. The products were characterized by argentometry, N2 physisorption, thermogravimetric analysis, X-ray diffraction, and FT-IR spectroscopy. The amine efficiency declined drastically when the amine density was less than 1 amine molecule per nm2, because formation of ammonium carbamate is difficult under such conditions. A double-functionalization method was introduced to improve the CO2 uptake and amine efficiency of the amine-grafted sorbent by impregnating more amino groups into the porous structure. The combination of grafted and mobile amino groups led to a synergic effect, resulting in a CO2 uptake of up to 20.2 wt% at 30 °C and 1 bar CO2. It was concluded that double-functionalization with tetraethylenepentamine was advantageous for enhancing the amine efficiency, whereas double-functionalization with polyethyleneimine was advantageous for enhancing the cyclic stability of the sorbent.
AB - Ethylenediamine was grafted onto a polystyrene surface to study the relationship between amine density and amine efficiency. Amine-tethered polystyrene was synthesized in two steps: (1) chloromethylation and (2) amination. The products were characterized by argentometry, N2 physisorption, thermogravimetric analysis, X-ray diffraction, and FT-IR spectroscopy. The amine efficiency declined drastically when the amine density was less than 1 amine molecule per nm2, because formation of ammonium carbamate is difficult under such conditions. A double-functionalization method was introduced to improve the CO2 uptake and amine efficiency of the amine-grafted sorbent by impregnating more amino groups into the porous structure. The combination of grafted and mobile amino groups led to a synergic effect, resulting in a CO2 uptake of up to 20.2 wt% at 30 °C and 1 bar CO2. It was concluded that double-functionalization with tetraethylenepentamine was advantageous for enhancing the amine efficiency, whereas double-functionalization with polyethyleneimine was advantageous for enhancing the cyclic stability of the sorbent.
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UR - http://www.scopus.com/inward/citedby.url?scp=84942910165&partnerID=8YFLogxK
U2 - 10.1246/bcsj.20150123
DO - 10.1246/bcsj.20150123
M3 - Article
AN - SCOPUS:84942910165
VL - 88
SP - 1317
EP - 1322
JO - Bulletin of the Chemical Society of Japan
JF - Bulletin of the Chemical Society of Japan
SN - 0009-2673
IS - 9
ER -