| 초록 |
2-Adamantanone is a useful compound for various pharmaceuticals and optical materials. However, it is difficult to selectively produce the 2-damantanone since it can be only prepared by oxidation of adamantine. Among various oxidation processes, only one process in which adamantane is reacted with concentrated sulfuric acid at an elevated temperature was adapted as a commercial process. However, conversion is not so high and separation and refinement of the products is still required. In this study, improvement of the oxidation process has been attempted by using heterogeneous oxidative catalyst, TiO2 powders, to selectively produce 2-adamantanone. Photocatalytic oxidations of adamantane were carried out with three types of TiO2 powders: PC-500 (anatase 100%, Millennium Co.); P-25 (anatase 75%, Degussa Co.); and RT-1 (anatase 0%, Photo & Environmental Technology Co.). 30% H2O2 or O3 was used as an oxidant. It was also investigated the temperature and solvent dependence on the conversion and selectivity for 2-adamantanone during irradiation. The best results were obtained when rutile TiO2 powders was used in acetic acid reflux temperaturewith H2O2. |
