A green mesostructured vanadosilicate catalyst and its unprecedented catalytic activity for the selective synthesis of 2,6-disubstituted p-benzoquinones
- Authors
- Selvaraj, M[Selvaraj, M.]; Park, SB[Park, S. B.]; Kim, JM[Kim, J. M.]
- Issue Date
- 2014
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- DALTON TRANSACTIONS, v.43, no.3, pp.958 - 966
- Indexed
- SCIE
SCOPUS
- Journal Title
- DALTON TRANSACTIONS
- Volume
- 43
- Number
- 3
- Start Page
- 958
- End Page
- 966
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/57261
- DOI
- 10.1039/c3dt52329b
- ISSN
- 1477-9226
- Abstract
- We have developed a green method for the production of 2,6-disubstituted p-benzoquinones (DSBQs) by liquid-phase oxidations of di/tri-substituted phenols using two-dimensional hexagonally thick-walled mesoporous vanadosilicate catalysts. In particular, 2,6-di-tert-butyl-p-benzoquinone was synthesized by the oxidation of 2,6-di-tert-butylphenol, using various reaction parameters, over mesoporous VSBA-15 catalysts synthesized with various vanadium contents. A promising chemical treatment method for the preparation of green mesoporous VSBA-15(5) or W-VSBA-15(5) (W: washed) catalysts was successfully used in the presence of ammonium acetate solution to remove moderately toxic non-framework V2O5 crystallite species from the active surface, and the catalytic activity of the recovered green mesoporous VSBA-15(5) catalyst was determined. To confirm the green aspects, recyclability and hot-catalytic filtration experiments were performed. The combined results show that the green mesoporous VSBA-15(5) is a highly active, recyclable, and promising heterogeneous catalyst for the selective synthesis of DSBQs (98-100%), and has unprecedented catalytic activity compared with other mesoporous vanadosilicate catalysts.
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Collections - Science > Department of Chemistry > 1. Journal Articles
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