CO Adsorption on Cation Exchaged Zeolite A and Mordenite 


Vol. 36,  No. 1, pp. 137-146, Feb.  1992


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  Abstract

양이온 교환된 천연 제올라이트 K111의 CO 기체 흡착특성과 양이온효과를 연구하였다. Na+-, Cu2+- 및 Ba2+- K111 의 경우 우수한 CO 흡착능을 가졌으며, 0.4N BaCl2 수용액으로 처리된 것이 가장 큰 CO 흡착능을 나타내었고, 합성 제올라이트 4A, 5A보다 뛰어난 흡착능을 가짐을 알 수 있었다. 양이온의 종류에 따른 흡착경향은 Ba2+ > Cu2+ > Na+ > K+ > Mg2+ > Ca2+ 의 순서로 나타났으며 단위격자당 교환된 양이온의 수와 종류 그리고 세공의 크기 등이 CO 기체의 흡착에 있어 주요 인자로 작용함을 알 수 있었다. 그리고 K111의 양이온에 따른 흡착경향을 비교하기 위해서 CNDO/2 계산을 행하였다. 계산된 결과 8원환 모델 내의 양이온과 CO 기체와의 상호작용 에너지는 실험결과와 비슷한 경향임을 알 수 있었다. The adsorption properties of CO on the cation exchanged natural zeolite, K111 and cation effects upon the CO adsorption were studied. Na+-, Cu2+- and Ba2+-K111 exhibited relatively good CO adsorption capacities and Ba2+- K111 treated by 0.4 N-BaCl2 solution proved itself as the best adsorbent and superior to the synthetic zeolite 4A and 5A. The observed adsorption tendency due to the cations were in the order of Ba2+ > Cu2+ > Na+ > K+ > Mg2+ > Ca2+. The cation exchanged number per unit cell as well as the kind of cation which forms bond with CO molecules in different intensities and other mineral factors such as pore size indicated to be important factors to the CO adsorption properties. The CNDO/2 calculations were performed to compare the adsorption tendencies and CO interaction energy of cations in K111.

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  Cite this article

[IEEE Style]

J. T. Kim, H. W. Kim, M. C. Kim, J. R. Lee, "CO Adsorption on Cation Exchaged Zeolite A and Mordenite," Journal of the Korean Chemical Society, vol. 36, no. 1, pp. 137-146, 1992. DOI: .

[ACM Style]

Jong Taik Kim, Heung Won Kim, Myung Chul Kim, and Jong Ryul Lee. 1992. CO Adsorption on Cation Exchaged Zeolite A and Mordenite. Journal of the Korean Chemical Society, 36, 1, (1992), 137-146. DOI: .

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