| 학회 | 한국화학공학회 |
| 학술대회 | 2017년 봄 (04/26 ~ 04/28, ICC 제주) |
| 권호 | 23권 1호, p.988 |
| 발표분야 | 재료 |
| 제목 | CO2 adsorption using PEI-impregnated mesoporous silica foam derived from power plant fly ash |
| 초록 | A family of highly efficient amine-impregnated silica foam with ultra large mesoporous has been reported for global warming CO2 capture. The silica foam can be synthesized using inexpensive sodium silicate under nearly neutral conditions without additive such as 1,3,5-trimethylbenzene, which significantly simplify the scale-up synthesis and reduce cost. Impropor disposal of power plant fly ash is a serious burden of the environment and its conversion into useful products has been pursued. In this work, we prepared a porous silica foam using sodium silicate extracted from fly ash. The structure directing agent Pluronic P123 was dissolved in the mixture of acetic acid, de-ionized water and ammonium fluoride at 40oC for 2h. Then a solution of extracted sodium silicate in water was added and the mixture was kept at 40oC for 24h, followed by aging at 70oC for 12h. The obtained product was calcined at 560oC for 6h to remove the surfactant. Finally, polyethyleneimine (PEI) was introduced into the silica foam by wet impregnation, and tested for CO2 adsorption. CO2 capture capacity, selectivity against N2, and recyclability of the PEI-impregnated adsorbent were also investigated. |
| 저자 | 장사천, 안화승 |
| 소속 | 인하대 |
| 키워드 | 화공소재 전반 |
| 원문파일 | 초록 보기 |
