| 摘要 |
PURPOSE:Using a semiconductor with a specific band gap as a catalyst, inexpensive toluene is irradiated with light to produce bibenzyl easily in high selectivity, which is used as an intermediate of styrene or of a variety of derivatives. CONSTITUTION:A semiconductor photocatalyst is dispersed in toluene and the dispersion is irradiated with light of 200-1,000nm/hr in an inert gas such as nitrogen gas, preferably at room temperature to produce bibenzyl. The semiconductor has a band gap of less than 5.0eV and, e.g., titanium oxide, tungsten oxide or their combination is used. Further, in order to increase the oxidation- reduction performance, a Pt, Pd or Au compound such as sodium chloroplatinate is added as a semiconductor electrode to effect photovoltaic reaction. The amount of the catalyst is 0.01-10pts. per 100pts. of the toluene on the reaction preferably. |
