Influence of TiO2/TS-1 calcination on hydroxylation of phenol

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. the tio2/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. © 2014 published by itb journal publisher.