Kinetic Model of Ethyl Benzene Oxidation Catalysed by Manganese Salts

Autor:	and Nikolai G. Digurov, Olga S. Grechishkina, Nadezhda V. Krukovskaya, Tatiana V. Bukharkina
Rok vydání:	2003
Předmět:	Reaction mechanism Organic Chemistry chemistry.chemical_element Manganese Chain termination Medicinal chemistry Ion Reaction rate Chemical kinetics chemistry.chemical_compound chemistry Organic chemistry Physical and Theoretical Chemistry Acetophenone Benzoic acid
Zdroj:	Organic Process Research & Development. 7:148-154
ISSN:	1520-586X 1083-6160
DOI:	10.1021/op9900986
Popis:	A practical model was developed for liquid-phase Mn3+-catalysed oxidation of ethyl benzene by O2. The model describes time profiles of concentrations of ethyl benzene and two intermediate oxidation products (methyl phenyl carbinol and acetophenone). The kinetic model of acetophenone oxidation to benzoic acid was also obtained. The influence of the main products of the ethyl benzene oxidation on the reaction kinetics is discussed. It was established that the addition of ethyl benzene hydroperoxide does not affect the reaction rate; the addition of methyl phenyl carbinol inhibits the reaction. The addition of acetophenone promotes the reaction and neutralises the inhibiting effect of methyl phenyl carbinol. The proposed reaction mechanism includes free-radical ethyl benzene oxidation. The process is initiated by the acetophenone interaction with Mn3+ ion, and the chain is propagated due to the hydroperoxide interaction with ethyl benzene. The chain termination is quadratic. The length of the oxidation chain...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e1dae37a5fb4ccd89e9adbc115c630b3 https://doi.org/10.1021/op9900986 Zobrazit plný text záznamu