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Catalytic performances of Fe2O3/TS-1 catalyst in phenol hydroxylation reaction

Prasetyoko, Didik and Royani, Cholifah Endah and Fansuri, Hamzah and Ramli, Zainab and Nur, Hadi (2010) Catalytic performances of Fe2O3/TS-1 catalyst in phenol hydroxylation reaction. Indonesian Journal of Chemistry, 10 (2). pp. 149-155. ISSN 1411-9420

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Abstract

Hydroxylation reaction of phenol into diphenol, such as hydroquinone and catechol, has a great role in many industrial applications. Phenol hydroxylation reaction can be carried out using Titanium Silicalite-1 (TS-1) as catalyst and H2O2 as an oxidant. TS-1 catalyst shows high activity and selectivity for phenol hydroxylation reaction. However, its hydrophobic sites lead to slow H2O2 adsorption toward the active site of TS-1. Consequently, the reaction rate of phenol hydroxylation reaction is tends to be low. Addition of metal oxide Fe2O3 enhanced hydrophilicity of TS-1 catalyst. Liquid phase catalytic phenol hydroxylation using hydrogen peroxide as oxidant was carried out over iron (III) oxide-modified TS-1 catalyst (Fe2O3/TS-1), that were prepared by impregnation method using iron (III) nitrate as precursor and characterized by X-ray diffraction, infrared spectroscopy, nitrogen adsorption, pyridine adsorption, and hydrophilicity techniques. Catalysts 1Fe2O3/TS-1 showed maximum catalytic activity of hydroquinone product. In this research, the increase of hydroquinone formation rate is due to the higher hydrophilicity of Fe2O3/TS-1 catalysts compare to the parent catalyst, TS-1.

Item Type:Article
Subjects:Q Science > QD Chemistry
Divisions:Science
ID Code:37098
Deposited By:INVALID USER
Deposited On:31 Mar 2014 11:25
Last Modified:13 Oct 2017 19:02

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