Kinetics of zeolite-catalysed toluene isopropylation

Autor:	Parimal A. Parikh, A.B. Halgeri, Y. S. Bhat, N. Subrahmanyam
Rok vydání:	1994
Předmět:	Reaction mechanism chemistry.chemical_compound Chemistry Diffusion Kinetics Physical chemistry Organic chemistry Activation energy Zeolite Biochemistry Toluene Product distribution Catalysis
Zdroj:	The Chemical Engineering Journal and the Biochemical Engineering Journal. 54:79-85
ISSN:	0923-0467
DOI:	10.1016/0923-0467(93)02818-h
Popis:	The isopropylation of toluene to cymene was studied over medium-pore zeolite ZSM-5. The influence of the operating parameters on the product distribution was studied and a reaction mechanism already established was used to develop a kinetic model. At temperatures above 548 K negative apparent activation energies were obtained which were ascribed to the increased diffusion resistances at higher temperatures. Apparent activation energies were corrected to intrinsic activation energies by taking into account the heats of adsorption and the activation energy for diffusion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::81ceba3b000cb7d91e9aa579e9d39aab https://doi.org/10.1016/0923-0467(93)02818-h Zobrazit plný text záznamu