SEPARATION OF NIOBIUM AND TANTALUM BY EXTRACTION CHROMATOGRAPHY WITH BIS(2-ETHYLHEXYL)PHOSPHORIC ACID
| Autor: | S. M. Khopkar, Yi Yu Vin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1991 |
| Předmět: |
Solvent-Extraction
Chromatography Chemistry Inorganic chemistry Extraction (chemistry) Niobium Tantalum chemistry.chemical_element Hydrochloric acid Analytical Chemistry chemistry.chemical_compound Column chromatography Di(2-Ethylhexyl) Phosphoric-Acid Tartaric acid Hydrogen peroxide Phosphoric acid |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| Popis: | A novel method is developed for the reversed-phase extractive chromatographic separation of niobium and tantalum with bis(2-ethylhexyl)phosphoric acid. Niobium is extracted from 1-10M hydrochloric acid and can be stripped with 3M sulphuric acid containing 2% hydrogen peroxide. Tantalum is extracted from 0.1-2M hydrochloric acid and can be stripped with 0.1M hydrochloric acid containing 2M tartaric acid. It is possible to separate niobium and tantalum, in different ratios, from multicomponent mixtures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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