A comprehensive thermal study of the state of tetrapropylammonium (TPA) phase in ZSM-5
β Scribed by Mohammed E. Kassem; Moein B. Sayed; Wafaa M. Arafa; Hussein M. El-Samman; Ismail M. Al-Emadi
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 596 KB
- Volume
- 197
- Category
- Article
- ISSN
- 0040-6031
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The combined use of thermal analysis (t.g.-d.t.a.) and 13C-n.m.r. spectroscopy allows one to identify four different structural environments for TPA + ions occluded in the ZSM-5 channels. A first low-temperature (ca. 380Β°C) d.t.a, peak is assigned to less strongly held or outer shell "strained" TPA
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