Phenol hydroxylation with nitrous oxide

被引：0

作者：

Ivanov, D.P. ^{[1
]}

Pirutko, L.V. ^{[1
]}

机构：

[1] Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk

来源：

Catalysis in Industry | 2012年 / 4卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

Dihydroxybenzenes; Nitrous oxide; Phenol hydroxylation; Zeolite catalysts;

D O I：

10.1134/S207005041203004X

中图分类号：

学科分类号：

摘要：

Phenol hydroxylation with nitrous oxide opens up a new, promising way to the gas-phase synthesis of dihydroxybenzenes, which are among the most important semiproducts of contemporary organic chemis-try. A process based on this reaction could provide an alternative to the existing liquid-phase processes employing hydrogen peroxide as the oxidizer. Here, we report phenol oxidation with nitrous oxide over zeo-lite MFI at 450-500°C and a residence time of 1.70-3.4 s. The dihydrobenzenes production rate per unit weight of the catalyst is 2.3 mmol/(g h). The process involving nitrous oxide is superior to the other technol-ogies in terms of oxidizer consumption efficiency and dihydroxybenzene isomer proportions. Specifically, the nitrous oxide conversion into dihydroxybenzenes is 74% and hydroquinone-to-catechol ratio in the reaction product is 1.2-1.4. © Pleiades Publishing, Ltd., 2012.

引用

页码：168 / 173

页数：5

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