Hydroxylation of phenol with nitrous oxide
Abstract
Hydroxylation of phenol with nitrous oxide on the zeolite catalysts offers a promising new way for the development of gas-phase process of obtaining dihydroxybenzene belonging to one of the most important precursors of modern organic chemistry. Process on the basis of this reaction may be an alternative to existing liquid-phase process, based on the use of hydrogen peroxide as an oxidant. In the present work the regularities of oxidation of phenol with nitrous oxide on zeolite MFI in the temperature range 450–500 °С reaction at 1,7–3,4 times of contact with the study. The performance of dihydroxybenzene per unit weight of catalyst was 2,3 mmol/g·h. Process with nitrous oxide has an advantage over other technologies for the utilization ratio of oxidizer and dihydroxybenzene isomers. Namely, the more complete the utilization of the oxidant (selective conversion of nitrous oxide in dihydroxybenzene 74 %) and the ratio of hydroquinone to the pyrocatechol in the reaction products 1,2–1,4.
About the Authors
D. P. Ivanov
Институт катализа СО РАН, Новосибирск
Russian Federation
Russian Federation
L. V. Piryutko
Институт катализа СО РАН, Новосибирск
Russian Federation
Russian Federation
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Review
For citations:
Ivanov D.P., Piryutko L.V. Hydroxylation of phenol with nitrous oxide. Kataliz v promyshlennosti. 2012;(3):9-15. (In Russ.)
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