Investigation of the different states of gallium in crystalline gallosilicates with pentasil structure and their role in propane aromatization
✍ Scribed by A.Yu. Khodakov; L.M. Kustov; T.N. Bondarenko; A.A. Dergachev; V.B. Kazansky; Kh.M. Minachev; G. Borbély; H.K. Beyer
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 380 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0144-2449
No coin nor oath required. For personal study only.
✦ Synopsis
Results obtained by i.r. and e.p.r, spectroscopy show that at least two gallium-containing extraframework species differing in location, chemical nature, and acidic behavior are present in gallosilicate isostructural with ZSM-5 zeolite. Both species are formed in larger amounts by gallium release from the framework during catalyst regeneration processes. One of them, partly located on the outer crystallite surface, is found to be involved as a catalytically active site in propane aromatization. The catalytic activity is attributed to Lewis acidity.