Synthesis of Ti-Hβ zeolites by liquid-solid isomorphous substitution and the catalytic properties in the vapor phase Beckmann rearrangement of cyclohexanone oxime

Autor:	Fei He, Li Wang, Yifeng Bu, Zehua Zhu, Yongjie Zhang, Zhentao Mi, Sen Han, Yaquan Wang, Wei Wu, Songbao Fu, Enze Min
Rok vydání:	2007
Předmět:	Chemistry Inorganic chemistry Cyclohexanone oxime Catalysis chemistry.chemical_compound X-ray photoelectron spectroscopy Isomorphous substitution Beckmann rearrangement Physical chemistry Physical and Theoretical Chemistry Brønsted–Lowry acid–base theory Zeolite BET theory
Zdroj:	Reaction Kinetics and Catalysis Letters. 90:365-372
ISSN:	1588-2837 0133-1736
DOI:	10.1007/s11144-007-4977-8
Popis:	A series of Ti-Hβ zeolites were synthesized by liquid-solid isomorphous substitution. Hβ and Ti-Hβ zeolites were characterized by BET, XPS, IR, etc., and studied in the vapor phase Beckmann rearrangement of cyclohexanone oxime. In comparison with pure Hβ, the incorporation of Ti in the Hβ framework leads to larger BET surface area and weaker Bronsted acid sites. The incorporation of Ti in the Hβ framework increases the conversion of cyclohexanone oxime and its stability. It is inferred that for the catalysts having the structure of a β zeolite, the suitable acid sites for the vapor phase Beckman rearrangement might be the weak Bronsted acid sites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f640f5dca7a9cd3127a10724b26e4fc8 https://doi.org/10.1007/s11144-007-4977-8 Zobrazit plný text záznamu Full text from SpringerLink