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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

대한화학회 제121회 학술발표회 및 총회 Characteristics of alkaline metal salts promoted MgO on CO2 absorption and desorption in mid-temperature

2018년 2월 6일 21시 22분 42초
INOR.P-104 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 19일 (목요일) 11:00~12:30
Inorganic Chemistry
저자 및
Jeong-Min Lee, Jin-Su Kwak, Kang Yeong Kim, Kyung-Ryul Oh, Young-Uk Kwon*
Department of Chemistry, Sungkyunkwan University, Korea
It has been reported that MgO based materials show different CO2 absorption and desorption behavior depending on its morphology. The synthesis of MgO/C with flowerlike morphology reported by Li et al. was adopted to make the most of surface area effect for CO2 capture. We expected flowerlike MgO/C and alkaline metal salts to be mixed well attributed to high surface area of MgO/C. After mixing, amorphous carbon was removed by thermal treatment. It is known that alkaline metal salts promote CO2 absorption process of MgO at intermediate temperature ranged from 200 to 500 ℃. We select K2CO3 and KNO3 as promoters among various alkaline metal salts and characterize their promoting effects in terms of ratio and preparation condition of sample. K2CO3-promoted MgO has different CO2 absorption tendencies according to K/Mg ratio. It seems that there is optimized ratio of potassium to magnesium for effective CO2 capture. We observe that conversion rate of MgO for CO2 capture increases with the increase of K/Mg ratio in case of K2CO3-promoted MgO. Meanwhile, in regard to KNO3-promoted MgO with LiNO3 additive, we focus on its activation phenomenon during a cycle rather than a tendency related to quantitative effect of promoter. The details will be presented in the poster.