Synthesis of Bimodally Porous γ-Alumina Granules by Sol-Gel/Oil-Drop Method

솔-젤/Oil-Drop법을 이용한 이중 다공성 γ-알루미나 그래뉼의 제조

  • Choi, Junseo (College of Environment and Applied Chemistry, Kyunghee University) ;
  • Kim, Jinsoo (College of Environment and Applied Chemistry, Kyunghee University) ;
  • Lee, Tai-Gye (Department of Chemical Engineering, Yonsei University)
  • 최준서 (경희대학교 환경.응용화학대학) ;
  • 김진수 (경희대학교 환경.응용화학대학) ;
  • 이태규 (연세대학교 화학공학과)
  • Received : 2007.01.10
  • Accepted : 2007.02.09
  • Published : 2007.04.10


Bimodally porous ${\gamma}$-alumina granules, including mesopores (2~50 nm) and macropores (>50 nm), were prepared by sol-gel and oil-drop method. Mesopores are made from the voids among the alumina crystallites, while macropores are from the space of the decomposed PS particles used as physical templates during the granulation process. The product ${\gamma}$-alumina granules with the average diameter of 2 mm were characterized by FE-SEM, XRD, FT-IR, $N_2$ porosimetry, and universal mechanical testing system.


Supported by : 한국과학재단


  1. H. Gleiter, Adv. Mater., 4, 474 (1992)
  2. S. E. Pratsinis, Prog. Energy Combust. Sci., 24, 197 (1998)
  3. C. J. Brinker and G. W. Scherer, Sol-Gel Science, Academic Press, New York (1990)
  4. G. Buelna, Ph. D. Dissertation, University of Cincinnati, Cincinnati, USA (2001)
  5. Z. M. Wang and Y. S. Lin, J. Catal, 174, 43 (1998)
  6. G. Buelna and Y. S. Lin, Microporous and Mesoporous Mater., 30, 359 (1999)
  7. B. E. Yoldas, Am. Ceram. Soc. Bull., 286, 54 (1975)
  8. J. Choi, B. Kim, and J. Kim, J. Chem. Eng. Jpn., 39, 1000 (2006)
  9. S.-S. Kim, J. Choi, J. Kim, H. Lee, and H. K. Song, J. Ind. Eng. Chem., 11, 533 (2005)
  10. D. Mishra, S. Anand, R. K. Panda, and R. P. Das, Mater. Lett., 42, 38 (2000)
  11. J. A. Gadsden, Infrared Spectra of Minerals and Related Inorganic Compounds, Batterworths, Reading, Mass (1975)
  12. K. S. W. Sing, D. H. Everett, R. A. W. Haul, L. Moscou, R. A. Pierotti, J. Rouquerol, and T. Siemieniewska, Pure Appl. Chem., 57, 603 (1985)
  13. J. H. de Boer, The Structure and Properties of Porous Materials, Butterworths, Reading, Mass (1975)