Abstract
It is important for sonochemical reactions to control the cavity that is generated in the liquid media under sonication. However, it is very difficult and there are still a lot of uncertainties due to a lot of parameters, which affects the efficiencies of sonochemical reactions. (e.g. frequency, physicochemical characteristics of solution and dissolved gas, etc.) Especially, it is thought that changing the temperature of the solution and the dissolved gas greatly influences the characteristic of the cavitation because it effects on specific characteristics such as the solubility, the thermal conductivity, the specific heat and the vapor pressure etc. In this study, the sonochemical reduction of Au(III) and decomposition of alcohols were carried out at various temperature of Ar-saturated solution(5, 10, 20 and 30℃). As a result, it was understood that sonochemical reactions strongly depend on the temperature of the solution. The sonochemical reactions were promoted as the decrease of the solution temperature. In addition, we used other rare gases. Our results suggest that sonochemical reactions depend on characteristics of dissolved gas rather than of solution
