Method for isolation of Ac from mixture of radium, actinium and thorium

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10425438" target="_blank" >RIV/00216208:11310/20:10425438 - isvavai.cz</a>

Result on the web

<a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=EP236488836" target="_blank" >https://patentscope.wipo.int/search/en/detail.jsf?docId=EP236488836</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Method for isolation of Ac from mixture of radium, actinium and thorium

Original language description

The present invention provides a method for isolation of Ac from a mixture comprising radium, actinium and thorium comprising the following steps: a) a mixture of Ra/Ac/Th is loaded onto a separation column containing an anion exchanger based on a styrene cross-linked with divinylbenzene, wherein the content of the cross-linking agent is in the range of 5 to 50 %, preferably 8 to 16 %, in nitrate cycle, and eluted with a solution containing a mixture of 0.6 - 0.8M aqueous solution of nitric acid and methanol in volume ratio of nitric acid solution : methanol = 30 : 70 to 10 : 90, b) the eluate from the separation column is lead through the purification column containing an anion exchanger based on styrene cross-linked with divinylbenzene, wherein the content of the cross-linking agent is in the range of 5 to 50 %, preferably 8 to 16 %, in nitrate cycle, and eluted with a solution containing a mixture of 0.6 - 0.8M aqueous solution of nitric acid and methanol in volume ratio of nitric acid solution : methanol = 30 : 70 to 10 : 90, c) the eluate from step b), containing 226Ra, is isolated, preferably for recycling for repeated irradiation, d) Ac and/or Th is washed out from the separation and the purification column by elution solution containing 5 to 10M mineral acid and optionally at least one complexing agent, preferably the mineral acid is HNO3 and/or HCl.

Czech name

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Czech description

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Type

P - Patent

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Patent/design ID

EP3430177B1

Publisher

EPO_1 -

Publisher name

European Patent Office

Place of publication

Munich, The Hague, Berlin, Vienna, Brussels

Publication country

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Date of acceptance

Nov 25, 2020

Owner name

České vysoké učení technické v Praze, Praha 6 - Dejvice, CZ; ÚJV Řež, a.s., Husinec - Řež, CZ; Univerzita Karlova, Přírodovědecká fakulta, Praha 1, CZ

Method of use

A - Výsledek využívá pouze poskytovatel

Usage type

A - K využití výsledku jiným subjektem je vždy nutné nabytí licence