Process for selective dissolution of molybdenum in the presence of tungsten
US4405571A · kind A · utility
3Cited by
2References
7Claims
0Family size
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Key dates
| Filing date | Jan 7, 1982 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | Jan 7, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the selective dissolution of molybdenum in the presence of tungsten in which the molybdenum is dissolved in an aqueous solution, having a pH of from -0.5 to +2.0, of a peroxy compound selected from the group consisting of hydrogen peroxide and ammonium peroxysulfate and in the presence of a catalyst selected from a salt of the group consisting of iron, nickel, copper, silver and thallium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.