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From Chemistry Towards Technology Step-By-Step
Journals / From Chemistry Towards Technology Step-By-Step / Volume 1 Issue 1 / Study of cyclohexylbenzene liquid-phase oxidation products composition
UDC 547.525.1

STUDY OF CYCLOHEXYLBENZENE LIQUID-PHASE OXIDATION PRODUCTS COMPOSITION Study of cyclohexylbenzene liquid-phase oxidation products composition

Published in From Chemistry Towards Technology Step-By-Step · Volume 1, Issue 1 · Pages 68–74 · Rubric: Scientific articles
DOI: https://doi.org/10.52957/27821900_2020_01_68
Received: 14.09.2020 Accepted: 19.10.2020 Published: 31.12.2020
Authors
GE
Georgy Koshel
EK Ekaterina A. Kurganova
Ekaterina A. Kurganova
AL
Aleksandr Frolov
ORCID Scopus ResearcherID SPIN
AL
Aleksandra Korshunova
ABSTRACT
The paper examines the contents of products of liquid-phase oxidation of cyclohexylbenzene. The study proves the existence of tertiary and secondary hydroperoxide in the oxidation products of cyclohexylbenzene. The hydroperoxides were determined directly by NMR1H-spectroscopy and indirectly by their products of reduction to ketones and alcohols. By comparing integral intensities of tertiary and secondary cyclohexylbenzene hydroperoxide proton signals, we can assume that the content of the latter is approximately 15-20% of the total hydroperoxide content present in the cyclohexylbenzene oxidation products. The general scheme of oxidative transformations of cyclohexylbenzene is compiled based on the experimental data obtained and the existing knowledge of the essence of liquid-phase oxidation of alkylsubstituted aromatic and cycloaliphatic hydrocarbons. The study shows a considerable decrease in selectivity of oxidation process when cyclohexylbenzene conversion increases up to 40-50%.
KEYWORDS
cyclohexylbenzene, liquid-phase oxidation, tertiary cyclohexylbenzene hydroperoxide, secondary cyclohexylbenzene hydroperoxide
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