화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.26, No.4, 394-399, August, 2015
DOI10.14478/ace.2015.1011  Export Citation
셀룰로오스계 라이오셀 활성탄소섬유의 구리 첨착에 의한 SO2 흡착특성 변화
SO2 Adsorption Characteristics by Cellulose-Based Lyosell Activated Carbon Fiber on Cu Additive Effects
김은애1, 2, 배병철1, 2, 이철위1, 3, 이영석4, 임지선1, 3, †
  • 1한국화학연구원 C-산업육성센터
  • 2충남대학교 바이오 응용화학과
  • 3과학기술연합대학원대학교 청정화학 및 생물학과
  • 4췅남대학교 바이오 응용화학과
Eun Ae Kim1, 2, Byong Chol Bai1, 2, Chul Wee Lee1, 3, Young-Seak Lee4, and Ji Sun Im1, 3, †
  • 1C-Industry Incubation Center, Korea Research Institute of Chemical Technology (KRICT), 141, Gajeong-ro, Yuseong-gu, Daejeon 305-600, Korea
  • 2Department of Applied Chemistry and Biological Engineering, Chungnam National University, Daejeon 305-764, Korea
  • 3Department of Applied Green Chemisty and Environmental Biotechnology, University of Science and Technology, Daejeon 305-333, Korea
  • 4Department of Applied Chemistry and Biological Engineering, Chungnal National University, Daejeon 305-764, Korea
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초록
본 연구에서는 Cu 촉매가 도입된 활성탄소섬유를 제조하여 고효울 SO2 흡착재를 제조하였다. 라이오셀 섬유를 내염화 및 탄화공정을 통해 탄소섬유를 얻었으며, SO2 흡착능을 향상시키기 위해 KOH 활성화를 사용하여 높은 비표면적 및 균일한 미세기공구조를 부여하였다. 활성탄소섬유에 Cu 촉매를 도입하기 위하여 Cu(NO3)2 · 3H2O 수용액을 사용하였으며, 공정 시 i) 탄소섬유 내 산소 관능기의 분해방응을 촉진하고, ii) 산화구리 및 질산염의 분해로 oxygen radical이 생성되어 탄소섬유의 활성화 반응을 촉진시켰다. 이로 인해 활성탄소섬유의 미세공과 중기공 형성효과 및 탄소섬유 표면에 고르게 분산된 Cu 촉매를 확인하였다. Cu 촉매 도입 후, 활성탄소섬유에 비해 비표면적 및 미세공의 비율이 약 10% 이상 증가되었고, SO2 흡착능이 149% 이상 향상된 결과를 얻을 수 있었다. Cu 촉매도입공정 시, 전이금속 촉매효과에 의하여 발달된 미세공, 중기공 및 비표면적에 의한 물리적 흡착과 도입된 Cu촉매에 의한 SO2 가스의 화학적 흡착반응의 시너지 효과에 기인하여 SO2 흡착능이 향상된 것으로 사료된다.
In this study, the Cu catalyst decorated with activated carbon fibers were propared for improving SO2 adsorption properties. Flame retardant and heat treatments of Lyocell fibers were carried out to obtain carbon fibers with high yield. The propared carbon fibers were activated by KOH solution for the high specific surface area and controlled pore size to improve SO2 adsorption properties. Copper nitrate was also used to introduce the Cu catalyst on the activated carbon fibers (ACFs), which can induce various reactions in the process; i) copper nitrate promotes the decomposition reaction of oxygen group on the carbon fiber and ii) oxygen radical is generated by the decomposition of copper oxide and nitrates to promote the activation reaction of carbon fibers. as a result, the micro and meso pores were formed and Cu catalysts evenly distributed on ACFs. By Cu-impregnation process, both the specific surface ared and micropore volume of carbon fivers increased over 10% compared to those of ACFs only. Also, this resulted in an increase in SO2 adsorption capacity over 149% than that of using the raw ACF. The improvement if SO2 adsorption properties may be originated from the synergy effect of two properties; (i) the physical adsorption from micro, meso and specific surface area due to the trasition metal catalyst effect appered during Cu-imprognation process and ii) the chemical adsorption of SO2 gas promoted by the Cu catalyst on ACFs.
Keywords:lyocell;acivated carbon fiber;impregnation;trasition metal;SO2
  1. Chung JK, Selective removal of SO2 / H2S over transition metal oxide catalysts, PhD Dissertation, Pukyoung National University, Busan, Korea (2007)
  2. Lee JH, Kim JG, Yang HC, Kim JH, Lee JK, Korean Chem. Eng. Res., 41, 129 (2003)
  3. DeBarr JA, Lizzio AA, New insights on the mechanism of SO2 removal by carbon, Proceedings of the 22nd Biennial Conference on Carbon, July 16-21, San Diego, USA (1995).
  4. Kim SS, Lee CH, J. Korea Environ. Sci., 21, 687 (2012)
  5. Suzuki M, Carbon, 32, 577 (1994)
  6. Lee JJ, Jun MG, Kim YC, J. Korean Ind. Eng. Chem., 18(5), 467 (2007)
  7. Ryu ZY, Zheng JT, Wang MH, Zhang BJ, J. Colloid Interface Sci., 230(2), 312 (2000)
  8. Martin-Gullon I, Andrews R, Jagoyen M, Derbyshire F, Fuel, 80, 969 (2001)
  9. Leng CC, Pinto NG, Carbon, 35, 1375 (1997)
  10. Yoshikawa M, Yasutake A, Mochida I, Appl. Catal. A: Gen., 173(2), 239 (1998)
  11. Carabineiro SA, McKee DW, Silva IF, Carbon, 39, 451 (2001)
  12. Matos J, Laine J, Appl. Catal. A: Gen., 241(1-2), 25 (2003)
  13. You SH, Kim JS, Jang HT, Cha WS, J. Korea academia-industrial, 12, 5370 (2011)
  14. Kim EA, Bai BC, Jeon Y, Lee CW, Lee Y, In SJ, Im JS, Appl. Chem. Eng., 25(4), 418 (2014)
  15. Cho GC, A study on the H2S removal using Na2CO3 impregnated activated carbon, Dissertation MS, Busan National University, Busan, Korea (1999).
  16. Bhati S, Mahur JS, Dixit S, Choubey ON, Bull. Korean Chem. Soc., 34, 569 (2013)
  17. Jung MJ, Yu HR, Lee D, Lee YS, Appl. Chem. Eng., 24(2), 201 (2013)
  18. Gegg SJ, Sing KSW, Adsorption, Surface Area and Porosity, 2nd ed., 262-281, Academic Press, NY, USA (1982).
  19. Eom SY, Cho TH, Cho KH, Ryu SK, Korean Chem. Eng. Res., 38, 591 (2000)
  20. Yim KS, Eom SY, Ryu SK, Edie DD, Korean Chem. Eng. Res., 41, 503 (2003)
  21. Lee WK, Kim KH, Ryu SK, Park BS, Korean Chem. Eng. Res., 42(2), 196 (2004)
  22. Ko S, Kim DH, Kim YD, Park D, Jeong W, Lee DH, Lee JY, Kwon SB, Appl. Chem. Eng., 24(5), 513 (2013)
  23. Ryu SK, Kim SY, Gallego N, Edie DD, Carbon, 37, 1619 (1999)
  24. Yoon KS, Lee YS, Ryu SK, Korean Chem. Eng. Res., 49(4), 443 (2011)
  25. Lee JJ, Kim YC, J. Korean Ind. Eng. Chem., 17(5), 532 (2006)
  26. Matatov-Meytal U, Sheintuch M, Catal. Today, 102, 121 (2005)
  27. Lee HS, Adsorption properties of carbon monoxide on copperion-exchanged zeolite Y, Dissertation MS, Chungnam National University, Daejeon, Korea (2004).