METHOD OF REDUCING HEXAVALENT URANIUM BY ULTRASONIC PROPAGATION

摘要

There is a technique in which an ultrasonic wave is propagated to an aqueous solution of tetravalent platinum ions containing a small amount of 2-propanol to thereby reduce the tetravalent platinum ions to platinum metal. However, the mere addition of 2-propanol as in that technique cannot produce a reducing ability sufficient for the reduction of hexavalent uranium to tetravalent uranium with ultrasonic propagation. A solid noble-metal catalyst is used to enhance the reducing ability brought by ultrasonic propagation and thereby attain the reduction of hexavalent uranium in an aqueous solution to tetravalent uranium.