Abstract
The Ti-MCM-41 molecular sieve synthesized with colloidal silica and titanium trichloride has been characterized by nitrogen adsorption, TG-DTA and spectroscopies of FT-IR, UV-Vis and UV-Raman. N2 adsorption isotherms reveal that with the incorporation of titanium into the framework of the molecular sieve, the pore size decreases and the wall thickness increases. TG and DTA profiles suggest that different template sorption sites exist in the framework of Ti-MCM-41. FT-IR, UV-Vis and UV-Raman spectra indicate that the formation of anatase TiO2 can be avoided during the preparation of the synthesis gel and the crystallization of the molecular sieve. Most Ti4+ ions are isolated and tetrahedrally coordinated in the framework of MCM-41.
Original language | English |
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Pages (from-to) | 331-334 |
Number of pages | 4 |
Journal | Chinese Journal of Catalysis |
Volume | 22 |
Issue number | 4 |
State | Published - 2001 |
Externally published | Yes |
Keywords
- Mesoporous molecular sieve
- Pore structure
- Skeleton structure
- Ti-MCM-41