fulltext.study @t Gmail

The hydroxylation of benzene to phenol over heteropolyacid encapsulated in silica

Paper ID Volume ID Publish Year Pages File Format Full-Text
49493 46750 2014 4 PDF Available
Title
The hydroxylation of benzene to phenol over heteropolyacid encapsulated in silica
Abstract

•H5PMoV2O40 nH2O PMoV2 was encapsulated in silica with preserved Keggin-structured (PMoV2@SiO2).•The PMoV2 found to be dispersed homogeneously in the silica coated with thin carbon film in PMoV2@SiO2.•The PMoV2@SiO2 was highly active and selective for the hydroxylation of benzene.•The PMoV2@SiO2 was heterogeneous and reusable.

The vanadium-substituted heteropoly acid (H5PMo10V2O40 nH2O) (PMoV2) was encapsulated in silica as an immobilized catalyst (PMoV2@SiO2) for the hydroxylation of benzene to phenol with H2O2. The PMoV2@SiO2 was prepared by the one-pot hydrolysis of tetraethyl orthosilicate (TEOS) with PMoV2 and Pluronic P123, and then the P123 was removed by pyrolysis at 500 °C to give PMoV2@SiO2. The PMoV2@SiO2 was found to be highly porous with micropores, mesopores and macropores, and the PMoV2@SiO2 was highly active and selective for the hydroxylation of benzene under mild conditions. Moreover, the catalyst can be reused at least 5 times without obvious deactivation.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Hydroxylation; Phenol; Vanadium; Heteropolyacid; Heterogeneous
First Page Preview
The hydroxylation of benzene to phenol over heteropolyacid encapsulated in silica
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 55, 5 October 2014, Pages 34–37
Authors
, , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us