| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 |
19권 1호 |
| 발표분야 |
환경에너지_포스터 |
| 제목 |
CO2 sorption and regeneration properties of novel K2CO3-based solid SnO2 sorbent for CO2 capture from flue gas |
| 초록 |
Gamma-alumina (γ-Al2O3) is used as a support or an additive material to design a potassium-based solid sorbent for CO2 capture from flue gas. However, the potassium-based γ-Al2O3 sorbent was deactivated due to the by-product like KAl(CO3)(OH)2 which was formed by reaction of K2CO3 with γ-Al2O3 during CO2 sorption. To overcome this problem, novel potassium-based solid sorbents were prepared by impregnation of various support materials with 30 wt.% K2CO3. In this study, CO2 sorption and regeneration properties of the potassium-based sorbents were investigated in a fixed bed reactor at low temperature range between 60oC and 200oC. And the structure changes of the potassium-based sorbents were investigated by power X-ray diffraction. In particular, the CO2 capture capacity of a KSnI30 sorbent, which was prepared by impregnation of SnO2 with K2CO3, was 83.2 mg CO2/g sorbent and was maintained without deactivation during multiple cycles. These results were due to the formation of KHCO3, which could be easily converted to K2CO3 even at 200 oC, without by-products, which is formed by reaction of active material, K2CO3, with a support or an additive material during CO2 sorption. From these results, we conclude that SnO2 can be used as a support or an additive material instead of γ-Al2O3 to design the regenerable potassium-based sorbent for CO2 capture at low temperatures. |
| 저자 |
조민선1, 이수출1, 권용목1, 황병욱1, 임은지1, 박명곤1, 정석용1, 이중범2, 김재창1
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| 소속 |
1경북대, 2한전 전력(연) |
| 키워드 |
CO2; K2CO3; KHCO3; SnO2; Al2O3
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| E-Mail |
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