Study on the active center of Ga2O3/HZSM-5 catalyst

Autor:	Suochuan Wu, Zhongyue Meng, Songling Jia
Rok vydání:	1993
Předmět:	Hydrogen Process Chemistry and Technology Catalyst support Inorganic chemistry chemistry.chemical_element Heterogeneous catalysis Catalyst poisoning Catalysis Propene chemistry.chemical_compound chemistry Gallium Temperature-programmed reduction
Zdroj:	Applied Catalysis A: General. 103:259-268
ISSN:	0926-860X
Popis:	The study of a physically mixed Ga 2 O 3 /HZSM-5 catalyst shows that propene aromatization on the catalyst may be improved by activating it in hydrogen at high temperature. The optimal pretreatment conditions are at 773 K in hydrogen for 2 h and about 1 wt.-% Ga content. Ga III in Ga 2 O 3 /HZSM-5 catalyst cannot be reduced by the high temperature pretreatment in hydrogen. The enhancement of propene aromatization on the catalyst may be due to the migration of gallium species, possibly into the channels of the zeolite, and the improvement of hydrogen transfer properties of the catalyst. The hydrogen adsorption-desorption process is completely reversible.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ba491d5a6f8345ac2551135f55f9f36a https://doi.org/10.1016/0926-860x(93)85056-u Zobrazit plný text záznamu