KAGAKU KOGAKU RONBUNSHU
Online ISSN : 1349-9203
Print ISSN : 0386-216X
ISSN-L : 0386-216X
Liquid-Phase Oxidation of Benzene to Phenol on Pd/SiO2 Catalyst
Effect of preparation method on the catalytic activity
Toshihiro NakaiEmiko SumidaHidenori YahiroMasaru ShiotaniKazuo SasakiMasahiro Nitta
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JOURNALS FREE ACCESS

1995 Volume 21 Issue 6 Pages 997-1001

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Abstract

Liquid phase oxidation of benzene to phenol was studied using palladium / silica catalysts prepared by impregnation and ion-exchange methods. The catalyst prepared by impregnation showed high catalytic activity, but the catalyst prepared by ion-exchange showed no catalyst activity. The high catalytic performance of the former was ascribed to the presence of Cl- ions on the catalyst surface. The reaction of benzene with hydrogen peroxide revealed that hydroxyl radical produced by the decomposition of hydrogen peroxide was an intermediate in the oxidation of benzene, and that Cl- ion suppressed a side reaction between hydrogen peroxide and hydrogen supplied on the catalyst.

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© by THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN
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