Vinylation of phenol by acetaldehyde: A new reaction for the synthesis of o-vinylphenol

A new catalytic reaction for the single-step synthesis of o-vinylphenol from phenol and acetaldehyde in the gas phase is investigated in this work. A search for an efficient catalyst was made. The best results were obtained with a modified Cr2O3 catalyst supported on γ-Al2O3. The effect of content o...

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Bibliographic Details
Published in:Catalysis communications 2016-11, Vol.86, p.59-62
Main Authors: Parfenov, Mikhail V., Pirutko, Larisa V., E.Soshnikov, Igor, V.Starokon, Eugeny, Kharitonov, Alexander S., Panov, Gennady I.
Format: Article
Language:English
Subjects:
Acetaldehyde
Monomer
Phenol
Vinylphenol
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Summary:A new catalytic reaction for the single-step synthesis of o-vinylphenol from phenol and acetaldehyde in the gas phase is investigated in this work. A search for an efficient catalyst was made. The best results were obtained with a modified Cr2O3 catalyst supported on γ-Al2O3. The effect of content of Cr2O3 and potassium as a modifying additive was studied. It was shown that the catalyst containing 13% Cr2O3 and 1% K makes it possible to obtain o-vinylphenol with a selectivity of 100% referred to phenol and up to 87% referred to acetaldehyde. The influence of reaction conditions on the activity, selectivity and stability of catalyst operation was elucidated. [Display omitted] •The catalytic reaction of o-vinylphenol synthesis from phenol and acetaldehyde was discovered.•A series of catalysts (metals and metal oxides) supported on alumina was screened.•The chromium catalyst modified with potassium was shown to be optimal.•Selectivity for o-VPh on the optimal catalyst was up to 87%.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2016.08.006