抄録
In the present study, the effects of pressure and temperature on sonochemical reaction were investigated using a flow-type sonochemical reactor equipped with a PZT transducer which effectively oscillates in the frequency range of 470-500 kHz. The gauge pressure and temperature conditions ranged from 0.03 to 0.2 MPa and from 313 to 373 K, respectively. All the experiments were carried out at the frequencies determined from respective frequency-transducer impedance curves which were obtained under different pressure and temperature conditions, and the effects of pressure and temperature on sonochemical reaction were evaluated by the rate constant of KI oxidation. The results demonstrated that the reaction rate constant decreased with an increase in the pressure at 313 and 333 K. On the other hand, however, it was found that the reaction rate constant slightly increased with the pressure at 373 K
