Density functional study for estimating Brønsted acid site strength in isomorphously substituted ZSM-5
✍ Scribed by A. Chatterjee; T. Iwasaki; T. Ebina; A. Miyamoto
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 747 KB
- Volume
- 21
- Category
- Article
- ISSN
- 1387-1811
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
We have examined the adsorption and reaction of ethylamine, isopropylamine, 2-ethylhexylamine, cyclooctylamine, and diphenylethylamine on H-ZSM-5, H-Y, and silica-alumina samples using temperature-programmed desorption (TPD) and thermogravimetric analysis (TGA). Each of the amines decomposes at Bum&
Broad-line 'H NMR and 'H MAS NMR were used to determine the geometry of the Bransted acidic sites in zeolites H-ZSM-5. The signals obtained correspond to bridging hydroxyl groups in Si-OH-Al arrangements with an H-Al distance of 0.246-0.252 nm. The concentration of hypothetical SiOHSi groups must be
A zinc-modi®ed ZSM-5 catalyst was prepared by a solid-state reaction between zinc dust and H-ZSM-5. The resulting catalyst is as active for the aromatization of ethane as zinc-modi®ed ZSM-5 prepared by impregnation.