发明名称 |
METHOD OF OBTAINING SORBENT FOR SELECTIVE EXTRACTION OF CESIUM |
摘要 |
FIELD: chemistry.SUBSTANCE: method of obtaining includes resorcinol neutralisation with a solution of alkali metal hydroxide, introduction of formaldehyde and calcium carbonate into a reaction mixture. Oligomerisation of the reaction mixture and polycondensation are performed with obtaining a granulated product. Stages of neutralisation, oligomerisation and polycondensation are performed in inert gas atmosphere. Polycondensation is realised by dispersion of an oligomer mixture into a layer of liquid which does not mix with it. After that, calcium carbonate is removed from the obtained granules by processing with an acid. A sorbent is washed and dried.EFFECT: obtaining highly selective spherically granulated sorbent with high osmotic stability.5 cl |
申请公布号 |
RU2521379(C1) |
申请公布日期 |
2014.06.27 |
申请号 |
RU20130105871 |
申请日期 |
2013.02.13 |
申请人 |
ZAKRYTOE AKTSIONERNOE OBSHCHESTVO "AKSION-REDKIE I DRAGOTSENNYE METALLY" |
发明人 |
TRET'JAKOV VITALIJ ALEKSANDROVICH;KONDRUTSKIJ DMITIRJ ALEKSEEVICH;BOBROV ALEKSANDR FADEEVICH;MILJUTIN VITALIJ VITAL'EVICH;NESTEROV ALEKSEJ GENNAD'EVICH |
分类号 |
B01J20/30;B01J20/26;B01J45/00 |
主分类号 |
B01J20/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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