초록 ▼

Metal halides are ultrapurified by selective complexation with a complexing agent to form a charged first complex. A ligand forms an oppositely charged second complex with metallic impurities in the metal halide to be purified. A solution containing these complexes is then passed through an ion exch

Metal halides are ultrapurified by selective complexation with a complexing agent to form a charged first complex. A ligand forms an oppositely charged second complex with metallic impurities in the metal halide to be purified. A solution containing these complexes is then passed through an ion exchange column and the desired purified metal halide collected. The present method is particularly useful in the production of ultrapure metal halides, such as zirconium fluorinate, for metallic glasses.

대표청구항 ▼

A method for removing a group VIA, VIIA, VIIIA, IB or IIB metal impurity from a halide of a group IVA or VA metal, comprising the steps of: preparing a solution comprising the halide of the metal to be purified, an amount of a complexing agent sufficient to form a first charged complex with any of s

A method for removing a group VIA, VIIA, VIIIA, IB or IIB metal impurity from a halide of a group IVA or VA metal, comprising the steps of: preparing a solution comprising the halide of the metal to be purified, an amount of a complexing agent sufficient to form a first charged complex with any of said group IVA or VA metal, and a ligand which forms a second charged complex with said metal impurity in an amount sufficient to complex with essentially all of the metal impurity to be removed, said second charged complex having a charge opposite that of said first charged complex; and passing said solution containing said first charged complex and said second charged complex through an ion exchange column, bearing charged groups which retain said second charged group upon said column, whereby said second charged complex binds to said column and said first charged complex passes freely through said column.