| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 가을 (10/21 ~ 10/23, 일산 KINTEX) |
| 권호 |
21권 2호, p.2288 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
New preparation method of potassium-based δ-alumina sorbents for CO2 capture at low temperatures. |
| 초록 |
CO2 capture capacity of the potassium-based γ-alumina sorbents decreased dramatically during the multiple tests at sorption and regeneration temperatures of 60°C and 200°C, respectively. This result is due to the formation of by-product [KAl(CO3)2(OH)2], which is an inactive materials. To improve the regeneration capacity during the multiple tests, we used the δ-alumina instead of γ-alumina as a support materials. A KAl(D)I40 sorbent was prepared by impregnation of δ-alumina with 40 wt% K2CO3 and a KAl(D)I40T sorbent was prepared by new preparation method. The regeneration capacity of the KAl(D)I40 sorbent is 72.6%, even though potassium-based sorbent using δ-alumina has better regeneration properties than that using γ-alumina as a support materials. On the other hand, the regeneration capacity of the KAl(D)I40T sorbent is 96.4%, resulting from the reduction in the formation of KAl(CO3)2(OH)2 during the CO2 sorption. Based on these results, we found that the regeneration capacities of the potassium-based alumina sorbents are affected by the structure of alumina and the preparation method. |
| 저자 |
김재창, 임호영, 박명곤, 권용목, 조민선, 채호진, 이수출, 조성빈
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| 소속 |
경북대 |
| 키워드 |
Sorbent; Carbon dioxide; δ-Alumina; Regeneration; Potassium carbonate
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| E-Mail |
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| 원문파일 |
초록 보기 |
