DOI Number : 10.5614/
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Influence of TiO2/TS-1 Calcination on Hydroxylation of Phenol

Ratna Ediati1, Maria Ulfa1, Hamzah Fansuri1, Zainab Ramli2, Hadi Nur2 &
Didik Prasetyoko1

1Department of Chemistry, Faculty of Mathematic and Natural Sciences,
Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo,
Surabaya 60111, Indonesia
2Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia.

Abstract. Titanium oxide (TiO2) was impregnated on the surface of titanosilicate-1 (TiO2/TS-1) and used as catalyst for hydroxylation of phenol with hydrogen peroxide. Calcination was conducted at various temperatures (400, 500, 600 and 700°C)in order to observe the effect on the structure and physicochemical properties towards catalytic activity for producing hydroquinone. The structure and physicochemical properties of the TiO2/TS-1 catalyst were characterized by several techniques, such as X-ray diffraction (XRD), infrared spectroscopy, nitrogen adsorption, pyridine adsorption and hydrophilic measurement. The results show that by increasing the calcination temperature,the surface acidity of the catalyst was also increased.TheTiO2/TS-1 catalyst calcined at 500°Cproved to be optimal for hydroquinone production, in which the anatase-rutile phase may be present dispersed on the MFI framework.

Keywords: anatase; calcinations;phenol hydroxylation; rutile;TiO2/TS-1.

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