화학처리된 흡착제의 이산화탄소 흡착 특성에 관한 연구

이경미; 조영민; Kyung-Mi Lee; Young-Min Jo

Journal of the Korean Industrial and Engineering Chemistry, Vol.19, No.5, 533-538, October, 2008

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화학처리된 흡착제의 이산화탄소 흡착 특성에 관한 연구

Adsorption Characteristics of Chemically Modified Sorbents for Carbon Dioxide

이경미, 조영민^†

경희대학교 환경응용화학대학, 환경연구센터, 경기도 449-701

Kyung-Mi Lee, and Young-Min Jo^†

College of Environment & Applied Chemistry, Center for Environmental Sutudies, Kyunghee University, Kyunggido 449-701, Korea

E-mail:

초록

본 연구는 상용 제올라이트와 석탄회를 알칼리 양이온(Li, K)과 알칼리 토금속(Ca, Mg)을 이용하여 화학적으로 개질하여 이산화탄소의 흡착능을 향상시키고자 하였다. Ca와 Mg를 함유한 흡착제의 경우 비표면적이 낮게 나타났으나, 전반적으로 뚜렷한 차이는 보이지 않았다. 양이온에 따른 흡착능은 K < Li < Mg < Ca 순으로 증가하는 경향을 나타내었다. Ca와 Mg로 함침된 흡착제의 경우 재생 효율이 가장 낮은 것으로 나타났다. 이는 Ca와 Mg 이온이 이산화탄소와의 친화력이 높기 때문이다. 이러한 양이온과 이산화탄소 분자 사이의 친화력은 이산화탄소에 대한 선택도를 증가시켜 줄 것으로 판단된다.

In order to enhance the adsorption capacity of CO2, a commercial zeolite and coal fly ash were chemically modified with alkali cations (Li, K) and alkaline-earth cations (Ca, Mg). Adsorbents containing Ca and Mg showed slightly lower surface areas. The adsorption capacity at the ambient temperature was highest with Ca, then in order of Mg, Li, and K. On the contrary, regeneration efficiency of the adsorbents with Ca and Mg was relatively low, because Ca and Mg cations had stronger affinity of carbon dioxide. The affinity between cations and CO2 molecule also may improve the selectivity in favor of CO2 adsorption.

Keywords:carbon dioxide;zeolite;fly ash;adsorption;alkali cation

[References]

Won JS, Song E, Kim TY, Leigh SB, Architectural Institute of Korea, 23, 187 (2007)
Yong Z, Mata V, Rodrigues AE, Sep. Purif. Technol., 26(2-3), 195 (2002)
Li P, Zhang S, Chen S, Zhang Q, Pan J, Ge B, J. Appl. Polym. Sci., 108, 3851 (2008)
Jeon JK, Park YK, Chue K, J. KOSAE, 20, 99 (2004)
Hutson ND, Chem. Mater., 16, 4135 (2004)
Jeong HD, Kim DS, Kim KI, J. Korean Ind. Eng. Chem., 16(1), 123 (2005)
Siporin SE, McClaine BC, Davis RJ, Langmuir, 19(11), 4707 (2003)
전학제, 서곤, 촉매개론, 4, 232, 도서출판 한림원 (2002)
Diaz E, Munoz E, Vega A, Ordonez S, Ind. Eng. Chem. Res., 47(2), 412 (2008)
Walton KS, Abney MB, LeVan MD, Microporous Mesoporous Mater., 91, 78 (2006)
Han JU, Kim DJ, Kang M, Kim JW, Kim JM, Yie JE, J. Korean Ind. Eng. Chem., 16(3), 312 (2005)
Yang RT, Adsorbent: Fundamentals and Applications, Wiley-Interscience, 177 (2003)
Kim JB, Theor. Appl. Chem. Eng., 8, 3237 (2002)
Siriwardane RV, Shen MS, Fisher EP, Energy Fuels, 19(3), 1153 (2005)
Song HK, Cho KW, Lee KH, J. Non-Cryst. Solids, 242, 69 (1998)

[Referenced By]

[1] Won JS, Song E, Kim TY, Leigh SB, Architectural Institute of Korea, 23, 187 (2007)

[2] Yong Z, Mata V, Rodrigues AE, Sep. Purif. Technol., 26(2-3), 195 (2002)

[3] Li P, Zhang S, Chen S, Zhang Q, Pan J, Ge B, J. Appl. Polym. Sci., 108, 3851 (2008)

[4] Jeon JK, Park YK, Chue K, J. KOSAE, 20, 99 (2004)

[5] Hutson ND, Chem. Mater., 16, 4135 (2004)

[6] Jeong HD, Kim DS, Kim KI, J. Korean Ind. Eng. Chem., 16(1), 123 (2005)

[7] Siporin SE, McClaine BC, Davis RJ, Langmuir, 19(11), 4707 (2003)

[8] 전학제, 서곤, 촉매개론, 4, 232, 도서출판 한림원 (2002)

[9] Diaz E, Munoz E, Vega A, Ordonez S, Ind. Eng. Chem. Res., 47(2), 412 (2008)

[10] Walton KS, Abney MB, LeVan MD, Microporous Mesoporous Mater., 91, 78 (2006)

[11] Han JU, Kim DJ, Kang M, Kim JW, Kim JM, Yie JE, J. Korean Ind. Eng. Chem., 16(3), 312 (2005)

[12] Yang RT, Adsorbent: Fundamentals and Applications, Wiley-Interscience, 177 (2003)

[13] Kim JB, Theor. Appl. Chem. Eng., 8, 3237 (2002)

[14] Siriwardane RV, Shen MS, Fisher EP, Energy Fuels, 19(3), 1153 (2005)

[15] Song HK, Cho KW, Lee KH, J. Non-Cryst. Solids, 242, 69 (1998)