Kinetic Modeling of Coke Oxidation of a Ferrierite Catalyst

Autor:	Tuomo J. Keskitalo, A. Outi I. Krause, Kyösti Lipiäinen
Rok vydání:	2006
Předmět:	chemistry.chemical_classification Reaction mechanism Alkene General Chemical Engineering Mineralogy General Chemistry Coke Industrial and Manufacturing Engineering Catalysis Ferrierite chemistry Chemical engineering Limiting oxygen concentration Chemical equilibrium Isomerization
Zdroj:	Industrial & Engineering Chemistry Research. 45:6458-6467
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie060521g
Popis:	Kinetic models describing coke oxidation were derived for purposes of designing a catalyst regeneration unit and to gain information on coke oxidation kinetics. The coke was formed during an alkene skeletal isomerization reaction on a ferrierite catalyst. Experiments were performed according to the temperature-programmed oxidation technique at several oxygen concentrations and heating rates. The parameters of the models were estimated by nonlinear regression. A power-law model with parametrized order of oxygen concentration described the experimental results adequately. Three other successful models, which were based on assumed reaction mechanisms, shared two main characteristics: the formation of a reactive oxygen intermediate in a fast equilibrium reaction, and the formation of CO and CO2 from one or more common precursors. All estimated parameters of the models were in a physically meaningful range.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5df8b5bff0c79930b13f54f573d12a87 https://doi.org/10.1021/ie060521g Zobrazit plný text záznamu