Search / Korean Journal of Chemical Engineering
HWAHAK KONGHAK,
Vol.36, No.6, 908-912, 1998
티타니움이 치환된 Silicalite(TS-1)의 제조 및 특성분석
Synthesis and Characterization of Titanium Silicalite-1(TS-1)
과산화수소를 이용한 탄화수소의 선택적인 산화반응에 유용한 촉매인 Titanium Silicalite-1(TS-1)의 제조와 특성분석에 관하여 XRD, FT-IR, Raman, TGA, SEM등을 이용하여 연주하였다. XRD를 이용하여 MFI구조의 생성을 확인하였으며, FT-IR은 MFI의 구조 생성과 아울러 그 격자내에 T가 치환되었음을 확인시켜 주었다. Ti의 양이 2.0 atomic %가 넘을 때는 부산물로서 anatase형의 TiO2가 생성됨을 Raman분광법으로써 확인하였다. 생성된 TS-1은 650℃까지는 열적으로 안정하여 0.25 μm정도의 균일한 입자크기를 가진 원통형 형상을 보였다. 합성과정 중 MFI구조는 170℃의 결정화 과정에서 형성되며 Ti가 silicalite격자내로 치환되는 시기는 550℃의 소성단계였다.
Synthesis and characterization of titanium silicalite-1(TS-1) have been studied by using XRD, FT-IR, Raman, TGA and SEM. The MFI structure of the prepared sample was confirmed by XRD and the results of FT-IR provided evidence of MFI structure and the substitution of Ti into silicalite lattice. When Ti content exceeded 2 atomic %, some Ti formed anatase TiO2 particles which was characterized by Raman spectroscopy. The product TS-1 was thermally stable up to 650℃ and formed cylinderical particles of uniform size of ca. 0.25 μm. The MFI structure was formed during crystallization step at 170℃ and Ti substitution into silicalite lattice occurred during calcination step at 550℃.
[References]
  1. Notari B, "Structure-Activity and Selectivity Relationships in Heterogeneous Catalysis," Elsevier, p. 243, 1991
  2. Notari B, Catal. Today, 18, 163, 1993
  3. Thangaraj A, Kumar R, Mirajkar SP, Ratnasamy P, J. Catal., 130, 1, 1991
  4. Astorino E, Peri JB, Willey RJ, Busca G, J. Catal., 157(2), 482, 1995
  5. Keshavaraja A, Ramaswamy V, Soni HS, Ramaswamy AV, Ratnasamy P, J. Catal., 157(2), 501, 1995
  6. Taramasso M, Perego G, Notari B, U.S. Patent, 4,410,501, 1983
  7. Duprey E, Beaunier P, Springuelhuet MA, Bozonverduraz E, Fraissard J, Manoli JM, Bregeault JM, J. Catal., 165(1), 22, 1997
  8. Rhee CH, Lee JS, Catal. Today, 38(2), 213, 1997
  9. Notari B, Adv. Catal., 41, 253, 1996
  10. Uguina MA, Serrano DP, Ovejero G, Vangrieken R, Camacho M, Appl. Catal. A: Gen., 124(2), 391, 1995