
Extraction of tungsten (VI) and molybdenum (VI) from acidic solutions by hydrazides (N', N'-dimethil hydrazides) of branched higher carboxylic acids of fractions Versatic 10 and Versatic 1019 with different number of carbon atoms has been studied. Extraction reagents have been synthesied in hexane by acylation of 1,1-dimethyl hydrazine and fractions by acid chlorides of Versatic acids fractions. Reagents have been identified by means of instrumental methods. Solutions of extraction reagents in neutral and protonated forms have been prepared in aviation kerosene. Optimum conditions for tungsten (VI) extraction have been specified depending on pH systems, concentrations and forms of extraction reagents. The technique for efficient extractional separation of tungsten (VI) and molybdenum (VI) from acidic solutions at their copresence and the mechanism of extraction have been offered.
Исследована экстракция вольфрама (VI) и молибдена (VI) из кислых растворов гидразидами (N', N'-диметилгидразидами) разветвленных высших карбоновых кислот фракций Versatic 10 и Versatic 1019 с различным числом атомов углерода. Экстракционные реагенты синтезированы ацилиро-ванием 1,1-диметилгидразина и фракций хлоранги-дридами кислот фракций Versatic в гексане. Реагенты идентифицированы инструментальными методами. Растворы экстракционных реагентов в нейтральной и протонированной формах приготовлены в авиационном керосине. Определены оптимальные условия извлечения вольфрама (VI) в зависимости от рН систем, концентраций и форм экстракционных реагентов. Предложены методика эффективного экстракционного разделения вольфрама (VI) и молибдена (VI) из кислых растворов при их совместном присутствии и механизм экстракции.
ЭКСТРАКЦИЯ, ВОЛЬФРАМ (VI), МОЛИБДЕН (VI), ОРГАНИЧЕСКИЕ РЕАГЕНТЫ, ЭКСТРАКЦИОННОЕ РАЗДЕЛЕНИЕ, TUNGSTEN (VI), MOLYBDENUM (VI)
ЭКСТРАКЦИЯ, ВОЛЬФРАМ (VI), МОЛИБДЕН (VI), ОРГАНИЧЕСКИЕ РЕАГЕНТЫ, ЭКСТРАКЦИОННОЕ РАЗДЕЛЕНИЕ, TUNGSTEN (VI), MOLYBDENUM (VI)
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