CHEMICAL-REACTIONS IN AQUEOUS-SOLUTIONS OF COPPER(II) SULFATE IN A THERMAL HYDROGEN PLASMA-JET

The results of a study on the interaction of a jet of the hydrogen-con taining plasma of an atmospheric-pressure are-discharge with an aqueou s solution of copper sulfate are presented. The reaction was carried o ut at a solution temperature of 75-90 degrees C, which is well below t he temperature of the reduction reaction of copper ions by molecular h ydrogen in aqueous solutions. The formation of ultrafine particles in this solution was established. The ultrafine powders produced contain primarily copper sulfides; no metal copper has been found. The experim ental results and estimations made are indicative of the probable part icipation of atomic hydrogen in chemical reactions with the components of solution.