Kinetische Untersuchung der Oxydation von 1,2,4,5-Tetramethylbenzol in einem polaren L�sungsmittel

Autor:	Dimcho I. Dimitrov, Antoaneta D. Stefanova, Philip I. Iotov
Rok vydání:	1975
Předmět:	Bromine Durene chemistry.chemical_element General Chemistry Isonicotinic acid Medicinal chemistry Catalysis Solvent Acetic anhydride chemistry.chemical_compound Acetic acid Reaction rate constant chemistry Organic chemistry
Zdroj:	Monatshefte f�r Chemie. 106:795-800
ISSN:	1434-4475 0026-9247
Popis:	A kinetic study was made of the liquid-phase oxidation of 1.2.4.5-tetramethylbenzene in polar solvents. It was shown that the catalytic activity of the cobalt salt catalysts used varies as the hydrocarbon concentration decreases, a finding attributed to the anionic effects in the catalyst. The catalytic activity of the cobaltous salts of nicotinic and isonicotinic acid was found to be high at low durene concentrations. Of the bromine derivatives studied as promotors, N-bromoacetamide was found to be the most effective. The effect of the polar solvent on the kinetics of the oxidation of durene was also studied in media containing acetic acid, acetic anhydride and mixtures thereof. The relationship between the rate constant (k) in acetic anhydride and the rate constant (k0) in acetic acid is found to be the following: $$\lg k = \lg k_0 + 24.59\frac{{\varepsilon - 1}}{{2\varepsilon + 1}}$$
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ccd5d05f96ca9e88586f9285f4f2a6ab https://doi.org/10.1007/bf00902184 Zobrazit plný text záznamu Full text from SpringerLink