Abstract
Catalytic oxidation rate of 2-ethyl-5,6,7,8-tetrahydro-9,10-anthrahydroquinone (ETHAHQ) using oxygen in a stirred reactor was studied. It was found that NaOH and some amines exhibit catalytic properties suitable for this oxidation. In the presence of NaOH with its amountof-substance concentration of 2 mmol/l(l)-phase, five times increased reaction rate is achieved. Additionally, mineral acids (sulphuric and phosphoric) and antioxidants (diphenylamine, N-isopropyl4-diphenylamine) were used for a thorough study of partial mechanism steps and their rates during oxidation. Experimental results were used for determination of the rate limiting step of the ETHAHQ oxidation. It was the hydrogen elimination from hydroxyl of hydroquinone.
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Kurc, L., Vopravil, V. & CČervený, L. Catalytic oxidation of 2-ethyl-5,6,7,8-tetrahydro-9,10-anthrahydroquinone. Research on Chemical Intermediates 27, 249–258 (2001). https://doi.org/10.1163/156856701300356464
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DOI: https://doi.org/10.1163/156856701300356464