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Di-, tri- and tetra-valent ion-exchanged NaY zeolite: Active heterogeneous catalysts for hydroxylation of benzene and phenol

Paper ID Volume ID Publish Year Pages File Format Full-Text
42545 45930 2009 5 PDF Available
Title
Di-, tri- and tetra-valent ion-exchanged NaY zeolite: Active heterogeneous catalysts for hydroxylation of benzene and phenol
Abstract

Ion-exchanged NaY zeolite with various valent cations are tested for hydroxylation of benzene and phenol with H2O2 in 1:1 and 3:1 molar ratios, respectively; the highest conversion of benzene (33%) in green one-step process is achieved using Cu–NaY with 100% selectivity to phenol, while OV–NaY shows >36% phenol conversion with 91% selectivity to catechol, whereas TOF exceeds 1000 with Zn–NaY after 6 h reaction time which is among the highest value reported so far.

Graphical abstractIon-exchanged NaY zeolite with various valent cations are tested for hydroxylation of benzene and phenol with H2O2 in 1:1 and 3:1 molar ratios, respectively; the highest conversion of benzene (33%) in green one-step process is achieved using Cu–NaY with 100% selectivity to phenol, while V–NaY shows >36% phenol conversion with 91% selectivity to catechol, whereas TOF exceeds 1000 with Zn–NaY after 6 h reaction time.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Ion-exchanged zeolite; Hydroxylation; Phenol; Benzene
First Page Preview
Di-, tri- and tetra-valent ion-exchanged NaY zeolite: Active heterogeneous catalysts for hydroxylation of benzene and phenol
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 356, Issue 2, 15 March 2009, Pages 167–171
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis