About The Journal
  Aims and Scope
  Editorial Board
  Submit a Manuscript 
  Subscription Information
Articles & Issues
  Issue
  Search
For Authors
  Instructions to Authors
  Ethics in Publishing
  Peer Review Process
  Author's Checklist
  Copyright Transfer Form
Contact us
 
 
 
 
Issue
Korean Chemical Engineering Research,
Vol.47, No.4, 424-429, 2009
물유리에서 소달라이트의 합성: 합성모액 조성이 결정화도와 입자 크기에 미치는 영향
Synthesis of Sodalite from Water Glass: Effect of the Composition of Synthetic Mixtures on Its Crystallinity and Crystallite Size
배송은, 서곤, 송미경, 노경태
물유리로 제조한 알칼리성 실리카-알루미나 합성모액에서 Na2O, SiO2, H2O 함량이 소달라이트의 결정화도와 입자 크기에 미치는 영향을 조사하였다. x=2.5~7.5, y=1.4~3.0, z=140~400 범위에서 한 성분의 함량만 바꾸어 제조한 x Na2O·y SiO2·Al2O3·z H2O 조성의 합성모액을 140 ℃에서 2일간 수열 반응시켜 소달라이트를 합성하였다. Na2O 함량이 많아지면 소달라이트의 결정화도가 높아지나 입자는 작아졌다. 합성모액의 SiO2/Al2O3 몰비가 2 근처에서 소달 라이트가 생성되었으며, 물의 함량이 달라지면 합성되는 제올라이트의 종류가 달라졌다. 이 합성조건에서는 SiO2/Al2O3 몰비가 2.0 근처이고, Na2O 함량이 많은 영역에서는 결정화도가 높은 소달라이트가 합성되었으며, 나트륨 이온의 구조유도체로서 효과로 입자 크기는 작아졌다.
The effects of Na2O, SiO2 and H2O contents of the synthetic mixtures prepared from water glass on the crystallinity and crystallite size of sodalite were studied. The composition of the synthetic mixtures described by x Na2O·y SiO2·Al2O3·z H2O was varied within x=2.5~7.5, y=1.4~3.0, z=140~400. The hydrothermal reaction was carried out at 140 ℃ for 2 days. High content of Na2O resulted in the high crystallinity and small crystallite of sodalite. The SiO2/Al2O3 molar ratios of around 2 were suitable for the synthesis of sodalite, and produced zeolite species were varied by the H2O content. Sodalite was mainly obtained with a high crystallinity from the synthetic mixtures with SiO2/Al2O3 molar ratio of around 2 and high content of Na2O. The high content of sodium ions caused a decrease in the particle sizes because of their role of structure directing agent.
Keywords: Sodalite; Water Glass; Synthesis; Crystallinity; Crystallite Size
[References]
  1. Barrer RM, Hydrothermal Chemistry of Zeolites, Academic Press, London, 1982
  2. Breck DW, Zeolite Molecular Sieves, Structure, Chemistry and Use, John Wiley & Sons, New York, 1974
  3. Werthmann U, Marler B, Gies H, Microporous Mesoporous Mater., 39, 549, 2000
  4. Khajavi S, Kapteijn F, Jansen JC, J. Membr. Sci., 299(1-2), 63, 2007
  5. Morss LR, Lewis MA, Richmann MK, Lexa D, J. Alloy Compd., 303, 42, 2000
  6. Van den Berg AWC, Bromley ST, Jansen JC, Microporous Mesoporous Mater., 78, 63, 2005
  7. Ogura M, Morozumi K, Elangovan SP, Tanada H, Ando H, Okubo T, Appl. Catal. B-Environ., 77, 294, 2008
  8. van Niekerk A, Zah J, Breytenbach JC, Krieg HM, J. Membr. Sci., 300(1-2), 156, 2007
  9. Li D, Yao J, Wang H, Hao N, Zhao D, Ratinac KR, Ringer SP, Microporous Mesoporous Mater., 106, 262, 2007
  10. Yao J, Zhang L, Wang H, Mater. Lett., 62, 4028, 2008
  11. Kang TG, Uh YS, Kim YM, Seo G, Korean Chem. Eng. Res., 25, 313, 1987
  12. Liu Q, Navrotsky A, Geochim. Cosomochim. Acta., 71, 2072, 2007
  13. Khajavi S, Jansen JC, Kapteijn F, J. Membr. Sci., 326, 153, 2009
  14. Munzer S, Caro J, Behrens P, Microporous Mesoporous Mater., 110, 3, 2008
  15. Yang X, Albrecht D, Caro J, Microporous Mesoporous Mater., 100, 95, 2007
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.