| 摘要 |
<p>An ion exchange material comprising a porous silicate glass prepared by a process which comprises producing a base glass from a melt which contains 40 to 80 mol percent silica and between 0.2 and 35 mol percent of one or more transition metals of Groups IVa, Va, VIa, VIIa and VIIIa and of the actinides, separating the base glass by heat treatment into at least a soluble phase and an insoluble phase, and leaching out the soluble glass to obtain a porous glass. In another embodiment the invention comprises a process for separating rare earth ions or actinide ions or mixtures thereof using the ion exchange material.</p> |
