P07 ソノケミカル効率に影響を与える因子

抄録

Intensification of sonochemical reaction is necessary to put sonochemical process into industrial application. To evaluate the rate of sonochemical reaction, we choose sonochemical efficiency because this method has high quantitative performance, do not use hazardous chemical material, and is simple to operate. In this study, factor that influence of sonochemical efficiency is investigated. A Langevin and disc type transducers were used at 129 and 488 kHz, respectively. A circulating water bath was connected to the annular section of the vessel to maintain the sample temperature at 298 ± 1 K. Sample was aqueous solution of 0.1 M potassium iodide and volume was 100 ml. At 488 kHz, sonochemical efficiency increased with ultrasonic power until 5 W after that becomes constant. This is because sonochemical reaction fields are not enough to spread in the reactor. On the other hand, at 129 kHz, as ultrasonic power becomes higher, sonochemical efficiency increased until 1 W after that decreased. The sonochemical efficiency at 1 W is 1.5 times higher than that at 500 kHz.