Vanadium-based polyoxometalate complex as a new and efficient catalyst for phenol hydroxylation under mild conditions

TitleVanadium-based polyoxometalate complex as a new and efficient catalyst for phenol hydroxylation under mild conditions
Publication TypeJournal Article
Year of Publication2018
AuthorsSharma, M, Saikia, G, Ahmed, K, Gogoi, SRani, Puranik, VG, Islam, NS
JournalNew Journal of Chemistry
Volume42
Issue7
Pagination5142-5152
Date PublishedAPR
Type of ArticleArticle
ISSN11440546
Abstract

An eco-compatible catalytic protocol for H2O2 induced hydroxylation of phenol (PH) to catechol (CT) and hydroquinone (HQ) in aqueous medium, using a polyoxovanadate (POV) complex as the catalyst, is described. The synthesis of the POV catalyst, with a new type of three dimensional framework, Na6(H2O)22(V10O28)2H2O (1) was accomplished by establishing a non-hydrothermal one-step methodology under mild conditions. The catalyst was characterized by elemental analysis, spectral studies, single crystal X-ray diffraction studies, and Brunauer–Emmett–Teller (BET) and TGA analysis. Under optimum conditions of reaction, conducted at ambient temperature, the phenol conversion reached up to 55.4% providing a TON of 138. The catalyst could be recovered easily and recycled at least up to three cycles without significant change in activity. The developed methodology is operationally simple and free from halogenated solvents or any other hazardous additives.

DOI10.1039/c7nj04433j
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

3.269

Divison category: 
Center for Material Characterization (CMC)

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