Binderless ZSM-5 성형체의 합성 및 자일렌 이성체의 흡착 특성에 관한 연구

윤효상; 홍지숙; 서정권; 신채호; Hyo-Sang Yun; Ji-Sook Hong; Jeong-Kwon Suh; Chae-Ho Shin

Applied Chemistry for Engineering, Vol.21, No.4, 417-423, August, 2010

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Binderless ZSM-5 성형체의 합성 및 자일렌 이성체의 흡착 특성에 관한 연구

Study on Characteristics and Preparation of Binderless ZSM-5 Granules for Adsorption of Xylene Isomers

윤효상, 홍지숙, 서정권 ^†, 신채호 ¹

한국화학연구원 환경자원연구센터
¹충북대학교 화학공학과

Hyo-Sang Yun, Ji-Sook Hong, Jeong-Kwon Suh^†, and Chae-Ho Shin¹

Environment & Resource Center, Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea
¹Department of Chemical Engineering, Chungbuk National University, Cheongju Chungbuk 361-763, Korea

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초록

파라자일렌(p-xylene) 분리용 흡착제로서 효과적인 그래뉼 형태의 바인더리스 ZSM-5 성형체를 제조하는 방법을 검토하였다. SiO2/Al2O3 = 50인 ZSM-5 결정분말에 무기 바인더인 colloidal silica sol 30 wt% 용액과 유기첨가물인 microcrystalline cellulose를 첨가하여 구형화한 후, 소성, 바인더리스 처리, NH4+ 이온교환, 활성화 등의 과정을 거쳐 충분한 강도(0.721 kgf) 및 높은 결정화도(94.6%)와 넓은 BET 비표면적(379.2 m2/g)을 갖는 흡착제를 제조하였다. 제조된 성형체의 흡착특성을 평가하기 위해 자일렌 3가지 이성질체를 1 : 1 : 1의 무게비로 혼합하여 100 ℃에서 회분식 흡착실험을 수행한 결과 제조된 바인더리스 ZSM-5 성형체는 상용흡착제보다 파라자일렌에 대해 높은 선택적 흡착성능을 나타냈다.

In this study, an effective method to prepare granular binderless ZSM-5 which is as efficient p-xylene separatory adsorbent was explored. Colloidal silica sol 30 wt% solution as an inorganic binder and microcrystalline cellulose as an organic additive were added to ZSM-5 powder (SiO2/Al2O3 = 50). Adsorbent with enough strength (0.721 kgf), high crystallinity (94.6%) and high BET specific surface area (379.2 m2/g) was obtained by calcination, binderless treatment, NH4+ ion exchange, and activation after spherical granulation process. A batch type adsorption experiment was proceeded with solutions comprising 3 xylene isomers by 1 : 1 : 1 weight ratio to evaluate adsorption characteristics of prepared absorbent. As a result, the obtained binderless ZSM-5 granule showed a higher selective adsorption performance for para-xylene than that of commercial adsorbent.

Keywords:p-xylene;separation;adsorbent;binderless;ZSM-5

[References]

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Lee CH, Koo YM, Korean J. Biotechonol. Bioeng., 20, 192 (2003)
U. S. Patent 5,495,061 (1996)
Minceva M, Rodrigues AE, AIChE J., 53(1), 138 (2007)
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서곤, 촉매개론, 전남대학교 출판부 (2005)
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Schwierger W, Bergk KH, Freude D, Hunger M, Pfeifer H, ACS Symposium Series, 398, 274 (1989)
Pollack SS, Adkins JW, Wetzel EL, Zeolites, 4, 181 (1983)
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U. S. Patent 4,818,508 (1985)
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[Related Articles]

[1] Suh JK, Kim BS, Lee JS, Lee YS, Lee CH, KIC News, 10, 6 (2007)

[2] Lee CH, Koo YM, Korean J. Biotechonol. Bioeng., 20, 192 (2003)

[3] U. S. Patent 5,495,061 (1996)

[4] Minceva M, Rodrigues AE, AIChE J., 53(1), 138 (2007)

[5] U. S. Patent 5,177,295 (1993)

[6] Yan TY, Ind. Eng. Chem. Res., 28, 572 (1989)

[7] Sakai H, Tomita T, Takahashi T, Sep. Purif. Technol., 25(1-3), 297 (2001)

[8] 서곤, 촉매개론, 전남대학교 출판부 (2005)

[9] Jin JH, Suh JK, Hong JS, Kim BS, Lee CH, J. Korean Ind. Eng. Chem., 20, 80 (2008)

[10] Kim JB, J. Korean Ind. Eng. Chem., 14(7), 979 (2003)

[11] U. S. Patent 5,665,325 (1997)

[12] Schwierger W, Bergk KH, Freude D, Hunger M, Pfeifer H, ACS Symposium Series, 398, 274 (1989)

[13] Pollack SS, Adkins JW, Wetzel EL, Zeolites, 4, 181 (1983)

[14] Nastro A, Aiello R, Successful Design of catalysis, 44, 227 (1988)

[15] U. S. Patent 4,818,508 (1985)

[16] Wendlandt KP, Toufar H, Unger B, Schwieger W, Bergk KH, J. Chem. Soc. Faraday Trans., 87, 2507 (1991)