| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 봄 (04/27 ~ 04/29, 부산 BEXCO) |
| 권호 |
22권 1호, p.1254 |
| 발표분야 |
환경 |
| 제목 |
Effects of alkali metal carbonates and nitrates of MgO-based sorbents for CO2 capture at middle temperatures and high pressures |
| 초록 |
We investigated the effects of alkali metal carbonates and nitrates on CO2 capture capacities of MgO-based sorbents at middle temperatures and high pressures. We prepared by wet-mixing of MgO-based sorbents promoted with alkali metal carbonates and nitrates or alkali metal nitrates. The CO2 capture capacity of MgO-based sorbents with K2CO3 and (Na-K)NO3 was high of approximate 500 mg CO2/g sorbent at 300oC and 20 atm. However, the CO2 capture capacity of the sorbent decreased rapidly from 500 mg CO2/g sorbent to 60 mg CO2/g sorbent during 3 cycles. On the other hand, the MgO-based sorbents with only (Na-K)NO3 showed a significant CO2 capture capacity (680 mg CO2/g sorbent), which was 70wt% of theoretical CO2 capture capacity (990 mg CO2/g sorbent) at 20 atm and the sorbent maintained the CO2 capture capacity about 300 mg CO2/g sorbent during 5 cycles. It was thought that K2CO3 was contributed to deactivation properties, resulting from the sintering of the sorbents. In this study, we will discuss the mechanism of CO2 sorption and the effects of alkali metal carbonates and nitrates using TPD, XRD, FE-SEM and BET in detail. |
| 저자 |
임호영1, 이수출1, 황병욱1, 이중범2, 김재창1
|
| 소속 |
1경북대, 2전력(연) |
| 키워드 |
친환경 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
