Supercritical fluid extraction of molybdenum complexes and its isotopes with carbon dioxide

• Дата: 2020
• Автори: Borts, B.V., Bulavin, L.A., Skoromnaya, S.F., Tkachenko, V.I.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2020
• Назва видання: Вопросы атомной науки и техники
• Теми: Nuclear-physical methods and processing of data
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/194561
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Supercritical fluid extraction of molybdenum complexes and its isotopes with carbon dioxide / B.V. Borts, L.A. Bulavin, S.F. Skoromnaya, V.I. Tkachenko // Problems of atomic science and tecnology. — 2020. — № 5. — С. 27-32. — Бібліогр.: 8 назв. — англ.

Separation of molybdenum complexes and its isotopes by supercritical fluid extraction (SFE) with carbon dioxide was experimentally investigated. The type of modifier, which provides increasing the efficiency of the metal and its isotopes separation, was determined. Extraction of molybdenum isotope complexes was carried out in the updated SFE-U unit at a constant value of the initial pressure P=20 MPa and constant temperatures of the upper (T1=35°C) and bottom (T2 = 45°C) flanges of the extraction chamber. The exposure time of the extract and the level along the extraction chamber height, from which the eluent was sampled, were set in the experiments. It is shown, that at a certain sampling height and at certain exposure times, change in the natural content of Mo isotopes in the extracts takes place.