Catalytic activity and product distribution in the disproportionation of toluene on different preparations of pentasil zeolite catalysts

Autor:	V.S. Nayak, L. Riekert
Rok vydání:	1986
Předmět:	chemistry.chemical_compound Chemistry Xylene Inorganic chemistry General Engineering Disproportionation Steady state (chemistry) Zeolite Benzene Toluene Product distribution Catalysis
Zdroj:	Applied Catalysis. 23:403-411
ISSN:	0166-9834
DOI:	10.1016/s0166-9834(00)81307-x
Popis:	The catalytic properties of pentasil-zeolites in the disproportionation of toluene at 640 – 730 K were investigated with respect to the influence of composition (Si : Al-ratio) and mode of synthesis (template) of the zeolite. The catalytic activity at near steady state (after initial partial deactivation) is roughly proportional to the Al-content, independent of the nature of the template used for zeolite synthesis. The ratio of benzene to xylenes in the products depends only on toluene-conversion, independent of composition or synthesis-mode of zeolite and of reaction temperature. The p-xylene content in the reaction products at higher conversions of toluene exceeds the value which would be expected for equilibrium between xylene-isomers only if the catalyst consists of relatively large zeolite crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8bdc70729e195e549526d9a12323391d https://doi.org/10.1016/s0166-9834(00)81307-x Zobrazit plný text záznamu