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Structure-direction in the crystallization of ITW zeolites using 2-ethyl-1,3,4-trimethylimidazolium.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 2014, Vol. 43 Issue 28, p10760-10766, 7p
- Publication Year :
- 2014
-
Abstract
- 2-Ethyl-1,3,4-trimethylimidazolium is so far the fifth and largest imidazolium cation able to produce the pure silica zeolite ITW. The crystallization is not direct, but occurs as an in situ transformation from either the chiral HPM-1 (STW) zeolite or the new layered zeolite precursor HPM-2 (preMTF) and results in large interpenetrated crystals with a habit so far unseen in this zeolite. The results of chemical, physicochemical and structural characterization allow us to discuss structure-direction issues. The large cation is occluded intact in the zeolite, causing an expansion of the zeolite volume. The degree of polarization of the Si-O bond is similar to that observed in other as-made ITW zeolites. [ABSTRACT FROM AUTHOR]
- Subjects :
- ZEOLITES
CRYSTAL structure
CRYSTALLIZATION
IMIDAZOLES
CHIRALITY
PHASE transitions
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 43
- Issue :
- 28
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 100112678
- Full Text :
- https://doi.org/10.1039/c4dt00828f