일루미늄 제거 및 이온교환한 Y 타입 제올라이트의 수분흡착 특성

최정환; 김희택; Jung Hwan Choi; Hee Taik Kim

Journal of the Korean Industrial and Engineering Chemistry, Vol.14, No.2, 170-175, April, 2003

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일루미늄 제거 및 이온교환한 Y 타입 제올라이트의 수분흡착 특성

A Study on the Water Adsorption Characteristics of De-aluminated and Ion-exchanged Y-type Zeolites

최정환, 김희택 ^{1, †}

한국가스공사 연구개발원
¹한양대학교 공학대학 화학공학과, 안산 425-791

Jung Hwan Choi, and Hee Taik Kim^{1, †}

R&D Center, Korea Gas Corporation, Korea
¹Department of Chemical Engineering, Hanyang University, Ansan 425-791, Korea

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초록

제습냉방시스템의 제습휠(desiccant wheel)에 적용하기 위한 목적으로 Y-type 제올라이트를 EDTA처리 또는 Mg⁺², Ca⁺², Li⁺, K⁺등의 알칼리 금속 양이온으로 이온교환하여 변형된 Y-type 제올라이트를 제조하였으며, 이들에 대한 수분흡착특성을 살펴보았다. 제습냉방시스템의 제습제로서 최적조건이라고 알려진 분리인자 (R) = 0.07 ~ 0.1일 때의 흡착등온선과 본 연구에서 제조한 변형된 제올라이트의 흡착 등온선을 비교한 결과, EDTA 0.5 ~ 0.6 g/g-zeolite 으로 처리한 경우와 Li⁺로 이온교환한 제올라이트가 최적의 제습제임을 알 수 있었다. 또한 알루미늄 substrate에 상기 제올라이트시료를 바인더 등과 혼합하여 코팅한 후 수분흡착특성을 확인해본 결과, LiY zeolite, water, N-methyl-2-pyrrolidone, polyurethane를 6:4:2:1의 비로 혼합한 후 알루미늄 substrate에 코팅하여 180 ℃에서 단계적으로 건조시킨 것이 최적임을 알 수 있었다.

In order to use as a desiccant for a desiccant cooling system, modified Y-type zeolite was prepared by EDTA treatment and ion-exchange with alkali metal cations such as Mg⁺², Ca⁺², Li⁺and K⁺. The water adsorption isotherm of modified zeolite was compared with that of the optimum separation factor (R = 0.07 ~ 0.1). From the comparison of adsorption isotherms with the optimum separation factor, Y-type zeolites treated by 0.5 ~ 0.6 g of EDTA/g-zeoite and exchanged by Li⁺ showed the optimal adsorption behaviors. Then, theh optimal modified zeolite was mixed with water, polyurethane and N-methyl-2-pyrrolidone, which was then coated onto aluminum substrate. It was found that the optimal mixing ratio of modified zeolite, water, polyurethane and N-methyl-2-pyrrolidone were 6:4:2:1, respectively.

Keywords:zeolite;dealumination;ion-exchange;desiccant;desiccant cooling system

[References]

GRI, 98-0104, Gaining Market Advantage with Desiccant Dehumidification (1984)
Lee SJ, Master Dissertation, Yonsei University, Seoul, Korea (1998)
Collier RK, Novosel D, Worek WM, ASHRAE Trans., 96, 1262 (1990)
GRI, Nano Composite Desiccant Materials (1989)
Bierenbuam HS, Chiramongkol S, Weiss AH, J. Catal., 23, 61 (1971)
U.S. Patent, 3,406,400 (1970)
Beaumont R, Barthomeuf D, J. Catal., 26, 218 (1972)
U.S. Patent, 5,052,177 (1971)
Chen NY, J. Phys. Chem., 80, 1 (1976)
Yoshida A, Nakamoto H, Okanishi K, Tsuru T, Takahashi H, Bull. Chem. Soc. Jpn., 55, 581 (1982)

[Related Articles]

[1] GRI, 98-0104, Gaining Market Advantage with Desiccant Dehumidification (1984)

[2] Lee SJ, Master Dissertation, Yonsei University, Seoul, Korea (1998)

[3] Collier RK, Novosel D, Worek WM, ASHRAE Trans., 96, 1262 (1990)

[4] GRI, Nano Composite Desiccant Materials (1989)

[5] Bierenbuam HS, Chiramongkol S, Weiss AH, J. Catal., 23, 61 (1971)

[6] U.S. Patent, 3,406,400 (1970)

[7] Beaumont R, Barthomeuf D, J. Catal., 26, 218 (1972)

[8] U.S. Patent, 5,052,177 (1971)

[9] Chen NY, J. Phys. Chem., 80, 1 (1976)

[10] Yoshida A, Nakamoto H, Okanishi K, Tsuru T, Takahashi H, Bull. Chem. Soc. Jpn., 55, 581 (1982)