Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Preparation of PAN-based Activated Carbon Fibers by Physical Activation

물리적 활성화에 의한 PAN계 활성탄소섬유의 제조

  • 임연수 (명지대학교 세라믹·화학공학부) ;
  • 김기원 (명지대학교 세라믹·화학공학부) ;
  • 정승훈 (명지대학교 세라믹·화학공학) ;
  • 김기덕 (명지대학교 세라믹·화학공학부) ;
  • 정윤중 (명지대학교 세라믹·화학공학부)
  • Published : 1999.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study activated carbon fibers were prepared from PAN-based carbon fibers by physical activation with steam or carbon dioxide. The variations in specific surface area amount of iodine adsorption and pore size distribution of the activated carbon fibers after the activation process were discussed. in steam activation BET surface area of about 1019 m2/g was obtained after 77% burn-off while carbn dioxide activation produced ACF with 694m2/g of BET surface area after 52% burn-off. However carbon dioxide activation produced at a similar degree of activation higher micropore volume(0.37 cc/g) and amount of iodine adsorption (1589mg/g) than steam activation. Nitrogen adsorption isotherms for (PAN based activated carbon fibers that prepared by physical activation were of type I in the Brunauer-Deming-Deming-Teller classification

활상탄소섬유는 입상 활성탄에 비해 빠른 흡 · 탈착 속도와 높은 흡착량을 갖기 때문에 흡착재, 촉매, 분자체와 같은 환경 신소재로서 큰 주목을 받고 있다. 본 연구에서는 안정화 PAN계 탄소섬유를 수증기와 CO2를 이용한 물리적 활성화에 의해 여러 등급의 활성탄소섬유를 제조하였고, 비표면적, 요오드 흡착량, 세공구조 등을 측정하였다. 수증기 활성화에서 77%의 burn-off에서 비표면적이 1019 m2/g을 나타내었고, 반면에 CO2 활성화에서는 52%의 burn-off에서 7168m2/g의 비표면적을 갖는 활성탄소섬유가 제조되었다 그러나, 비슷한 burn-off에서는 CO2로 활성화한 경우에서 세공용적이 0.37 cc/g이고, 요오드 흡착량이 1589 mg/g으로서 수증기 활성화보다 더 큰 세공용적과 요오드 흡착량을 나타내었다. 또한 제조된 활성탄소섬유의 질소 흡착등온선들은 Brunaner-Deming-Deming-Teller의 분류에 따르면 모두 type I으로 주로 미세공들로 이루어져 있음을 알 수가 있었다.

Keywords

References

  1. Carbon v.32 no.4 Activated Carbon Fiber : Fundamentals and Application S. Motoyuki
  2. Energy and Fuel v.8 no.6 Oxidative Removal of$SO_2$and Recovery of$H_2SO_4$over Polyacrylonitrile-based Active Carbon Fiber S. Kisamori;K. Kuroda;S. Kawano;I. Mochida;Y. Matsumura;M. Yoshikwa
  3. Carbon v.35 no.3 Adsorption of SO₂onto Oxidized and Heat-treated Activated Carbon Fibers M. A. Daley;C L Mangun;J. A. Debarr;S. Riha;A. A. Lizzio;G. L. Donnals;J. Economy
  4. The Chem. Soc. of Japan v.12 SO₂Removal Activity and its Regeneration of Polyacrylonitrile-based Active Carbon Fiber I. Mochida
  5. Carbon v.32 no.7 Effect of the Activating Gas on Tensile Strength and Pore Structure of Pitch-based Carbon Fibers J Alcaniz-Monge;D. Cazorla-Amoros;A. Iinares-Solano;S. Yoshida;A. Oya
  6. Carbon v.30 no.4 The Effects of Activation by Carbon Dioxide on the Mechanical Properties and Structure of PAN-based Activated Carbon Fibers T. H Ko;P. Chiranairadul;C. K. Lu;C. H. Lin
  7. Carbon v.36 no.4 Porous Structure of PAN-based Activated Carbon Fibers Z. Ryu;J. Zheng;M Wang
  8. Part Ⅰ, Theoretical in Powder Surface Area and Porosity S. Lowell;J. E. Shields
  9. Extended Abstracts Carbon v.97 Activated Carbon Fibers from PAN. [ : Steam and KOH activation I. Martin-Gullon;M. Jagtoyen;G. Kimber;F. Derbyshire
  10. 요업기술 v.12 no.3 탄소섬유의 산화반응 노재승;서동수
  11. 한국재료학회지 v.7 no.2 CO₂gas 및 공기중에서 피치계 탄소섬유의 산화거동 노재승;서동수
  12. Carbon v.33 no.1 The Use of Steam and CO₂as Activating Agents in the Preparation of Activated Carbon F. Rodriguez-Reinoso;M. Molina-Sabio;M. T. Gonzalez
  13. Chemistry and Physics of Carbon v.2 Activated Dilfusion of Gases in Molecular-Sieve Materials P.L. Walker, Jr.;L. G. Austin;N. P. Nandi;P. L. Walker, Jr.(ed.)
  14. Fuel v.64 no.7 Kinetic Studies of Steam Gasification of Char in the Presence of$H2,\;CO_2$and CO H. J. Muhlen;K. H. Heek;H. Jungten
  15. Carbon v.29 no.3 An Update on the Carbon-Oxygen Reaction P. L. Walker. Jr.;R. L Taylor;J. M Ranish
  16. Carbon v.24 no.6 Mechanism of Water Vapor Gasification of Carbon-A new model K. J. Hutinger
  17. Carbon '97, 23rd Biennial Conference on Carbon v.1 Development of Microporocity in Synthetic Active Carbons by Activation of Steam and Carbon Dioxide A. Bagreev;J. Lahaye
  18. Carbon '95, 22rd Biennial Conference on Carbon Micropore Size Distribution of Activated Carbons Prepared with Carbon Dioxide and Steam M.T. Gonzalez;A. Sepulveda-Escribano;M. Molina-Sabio;F. Rodriguez-Reinoso