| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a new method for separating and recovering noble metals where, from a material comprising a plurality of noble metals and base metals, each noble metal can be efficiently separated in a pure state by a simple operation using an adsorption/elution agent inexpensively obtainable in large amounts, and easily regenerative after use, and which is suitable for performing on an industrial scale. <P>SOLUTION: Individual noble metals are classified and isolated at high purity from a material comprising a plurality of noble metals and base metals through: a step (a) where the material is dissolved with hydrochloric acid; a step (b) where the hydrochloric acid solution obtained by the step (a) is passed through a cellulose column, so as to adsorb noble metals; a step (c) where, from the cellulose with the noble metals adsorbed, the noble metals belonging to the first group are classified and recovered using a mixture of hydrochloric acid and 2-propanone as a development/elution agent; and a step (d) where the noble metals belonging to the second group are classified and recovered using a mixture of hydrochloric acid and 1-butanol as a development/elution agent. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
