Formation of Associates from Nanosized Complexes of Uranium in the Water - Supercritical Carbon Dioxide System
Abstract
The paper describes the results from studies into the role of water in the formation of associates from nanosized complexes of uranium in a supercritical carbon dioxide (SC CO2) medium. It has been demonstrated experimentally that water in the SC CO2 exists in the form of microdrops. It is found that at a pressure of 10 MPa and a temperature of 40°C the UO2(NO3)2∙2(C4H9O)3PO complex may take on hydrophilic properties. The conclusion is made that in that event the mentioned complex would concentrate in water microdrops. The concentration of the complex in water microdrops gives rise to the formation of associates, the size of which is determined by microdrop dimensions.
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