Catalytic Activity of TS-1 on the Hydroxylation of Benzene and Toluene with Hydrogen Peroxide in a Bubble Reactor
Suchitraporn Sakullimcharoen, Panas Manit and Tharathon Mongkhonsi* Author for corresponding; e-mail address: jojo_en@hotmail.com
Volume: Vol.35 No.1 (JANUARY 2008)
Research Article
DOI:
Received: 14 September 2007, Revised: -, Accepted: 17 November 2007, Published: -
Citation: Sakullimcharoen S., Manit P. and Mongkhonsi T., Catalytic Activity of TS-1 on the Hydroxylation of Benzene and Toluene with Hydrogen Peroxide in a Bubble Reactor, Chiang Mai Journal of Science, 2008; 35(1): 163-170.
Abstract
The hydroxylation of benzene with hydrogen peroxide as an oxidant over TS-1 was carried out in a bubble reactor. The catalyst was prepared by hydrothermal synthesis. When the volume of benzene feeding in each period was increased while the feeding frequency constant, the conversion of benzene decreased. The amount of phenol increased when the reaction mixture was left for a period of time up to 4 hours, suggesting the reaction of benzene dissolved in the liquid phase. The extension of the experiment on the hydroxylation of toluene using the best condition obtained from the hydroxylation of benzene shows that o-cresol and p-cresol are two main hydroxylation products of toluene.