Homogeneous Catalysts of Redox Processes Based on Heteropolyacid Solutions III: Developing Effective Ways for the Preparation of 2,3,5-Trimethyl-1,4-Benzoquinone
- 作者: Rodikova Y.A.1, Zhizhina E.G.1
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隶属关系:
- Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences
- 期: 卷 11, 编号 3 (2019)
- 页面: 179-190
- 栏目: Catalysis in Chemical and Petrochemical Industry
- URL: https://journals.rcsi.science/2070-0504/article/view/203143
- DOI: https://doi.org/10.1134/S2070050419030097
- ID: 203143
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详细
Different ways of preparing 2,3,5-trimethyl-1,4-benzoquinone (TMQ), a key intermediate in the synthesis of vitamin E, via the catalytic oxidation of 2,3,6-trimethylphenol (TMP) are considered. It is shown that aqueous solutions of Mo–V phosphoric heteropolyacids (HPAs) are promising catalysts for the oxidation of TMP with oxygen. Different technological options are analyzed for using HPAs in this reaction: the one-stage homogeneous acetic acid oxidation of TMP and a biphasic two-step procedure. The efficiency of a biphasic version that ensures high (up to 99.5%) selectivity for TMQ and high catalyst productivity in the target reaction (≈600–800 g TMQ \({\text{L}}_{{{\text{cat}}}}^{{ - 1}}\) h−1) is proved.
作者简介
Yu. Rodikova
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: rodikova@catalysis.ru
俄罗斯联邦, Novosibirsk, 630090
E. Zhizhina
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: zhizh@catalysis.ru
俄罗斯联邦, Novosibirsk, 630090
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