SU453354A1 - The method of separation of molybdenum and technetium - Google Patents

The method of separation of molybdenum and technetium

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Publication number
SU453354A1
SU453354A1 SU1872175A SU1872175A SU453354A1 SU 453354 A1 SU453354 A1 SU 453354A1 SU 1872175 A SU1872175 A SU 1872175A SU 1872175 A SU1872175 A SU 1872175A SU 453354 A1 SU453354 A1 SU 453354A1
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SU
USSR - Soviet Union
Prior art keywords
molybdenum
technetium
separation
chloroform
acid
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SU1872175A
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Russian (ru)
Original Assignee
Б. Подчайкова В. А. Яценко Уральский ордена Трудового Красного Знамени политехнический институт С. М. Кирова
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Application filed by Б. Подчайкова В. А. Яценко Уральский ордена Трудового Красного Знамени политехнический институт С. М. Кирова filed Critical Б. Подчайкова В. А. Яценко Уральский ордена Трудового Красного Знамени политехнический институт С. М. Кирова
Priority to SU1872175A priority Critical patent/SU453354A1/en
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Publication of SU453354A1 publication Critical patent/SU453354A1/en

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Изобретение относитс  к .неорганической химии , в частности к способам разделени  элементов .The invention relates to inorganic chemistry, in particular to methods for the separation of elements.

Известен способ экстракционного разделени  молибдена и технеци  с использованием в качестве реагента нафтальгидразида изоникотиновой кислоты и в качестве органического растворител  хлороформа. Недостатком известного способа  вл етс  низка  степень извлечени  молибдена (70%).A known method for the extraction separation of molybdenum and technetium using isonicotinic acid naphthalhydrazide as a reagent and chloroform as an organic solvent. The disadvantage of this method is the low degree of molybdenum recovery (70%).

Дл  увеличени  степени извлечени  молибдена и повышени  избирательности разделени  молибдена и технеци  в качестве растворител  предлагаетс  использовать смесь ацетона с хлороформом при соотношении компонентов (в об. %): 30-50 и 70-50 соответственно , а дл  уменьшени  соэкстракции технеци  примен ть 2-3 ,н. трихлоруксусную кислоту .To increase the degree of molybdenum recovery and increase the selectivity of separation of molybdenum and technetium, it is proposed to use a mixture of acetone and chloroform as a solvent with a ratio of components (in vol.%): 30-50 and 70-50, respectively, and to reduce technetium 2 , n. trichloroacetic acid.

В указанных услови х молибден экстрагируетс  на 98%, а технеций практически не извлекаетс .Under these conditions, molybdenum is extracted by 98%, and technetium is practically not recovered.

Пример. Облученный молибдат аммони  раствор ют в 1-2 н. сол ной кислоте, перенос т в мерную колбу на 50-100 мл и довод т до метки той же кислотой. В делительную воронку помещают аликвотную часть раствора (5-10 мл), приливают 2-4 мл 2-3 н. трихлоруксусной кислоты и экстрагируют 5- 10 мл 0,1%-ного раствора пафтальгидразида изоникотиновой кислоты в смеси 30-50 об.% ацетона и 70-50 об. % хлороформа в течение 1-2 мин. Органический слой сливают и реэкстрагируют молибден 4-5 п. сол ной кислотой.Example. The irradiated ammonium molybdate is dissolved in 1-2 n. hydrochloric acid is transferred to a 50-100 ml volumetric flask and made up to the mark with the same acid. An aliquot portion of the solution (5-10 ml) is placed in a separatory funnel, 2-4 ml of 2–3 ml are added. trichloroacetic acid and extracted with 5-10 ml of a 0.1% solution of isonicotinic acid paftalhydrazide in a mixture of 30–50% by volume of acetone and 70–50% by volume. % chloroform for 1-2 minutes The organic layer is drained and the extra molybdenum is stripped with 4-5 p. Of hydrochloric acid.

Предмет изобретени Subject invention

Способ разделени  молибдена и технеци  путем экстракции комплекса молибдена с нафтальгидразидом изоникотиновой кислоты органическим растворителем, например хлороформом , отличаюш;ийс  тем, что, с целью увеличени  полноты разделени , в качестве органического растворител  примен ют смесь, состо щую из 30-50 об. % ацетона и 70-50 об. % хлороформа, и экстракцию провод т в присутствии 2-3 н. трихлоруксусной кислоты.The method of separating molybdenum and technetium by extracting the molybdenum complex with isonicotinic acid naphthalhydrazide with an organic solvent, for example chloroform, is distinguished by the fact that, in order to increase the completeness of the separation, a mixture of 30-50 vol. % acetone and 70-50 vol. % chloroform, and extraction is carried out in the presence of 2-3 n. trichloroacetic acid.

SU1872175A 1973-01-15 1973-01-15 The method of separation of molybdenum and technetium SU453354A1 (en)

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SU1872175A SU453354A1 (en) 1973-01-15 1973-01-15 The method of separation of molybdenum and technetium

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Application Number Priority Date Filing Date Title
SU1872175A SU453354A1 (en) 1973-01-15 1973-01-15 The method of separation of molybdenum and technetium

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SU453354A1 true SU453354A1 (en) 1974-12-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093697A (en) * 1976-03-16 1978-06-06 Gesellschaft Fur Kernforschung M.B.H. Process for recovering molybdenum-99 from a matrix containing neutron irradiated fissionable materials and fission products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093697A (en) * 1976-03-16 1978-06-06 Gesellschaft Fur Kernforschung M.B.H. Process for recovering molybdenum-99 from a matrix containing neutron irradiated fissionable materials and fission products

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