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ZnFe2O4 as a new catalyst in theC-methylation of phenol
Authors:Jolanta Wolska  Krystyna Przepiera  Hanna Grabowska  Aleksander Przepiera  Maciej Jabłoński  Roman Klimkiewicz
Affiliation:(1) Institute of Chemistry and Environmental Protection, Szozecin University of Technologyal, Piastów 42, 77-065 Szezecin, Poland;(2) W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wroclaw 2, Poland
Abstract:
This paper reports the investigation ofC-alkylation of phenol with methanol over zinc ferrite as a catalyst. The reactions were carried out in gas phase at atmospheric pressure in dependence of increasing temperature. The total selectivity towardsortho-cresol and 2,6-xylenol over 300°C surpassed 90%. ZnFe2O4 was obtained by oxidative precipitation method from solution of iron (II) sulphate and zinc sulphate at 60°C. Based on the results, the best equation describing the oxidation reaction rate was found. The obtained products have been investigated using X-ray fluorescence spectrometry and X-ray diffraction analysis.
Keywords:Phenol alkylation  catalytic methylation  zinc ferrite  oxidative precipitation
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