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首页> 外文会议>Fifth International Conference on Ion Exchange Processes held on 5-9 July 1998 at Plas Coch College, The North East Wales Institute, Wrexham, UK >Some properties of the strong base anion exchangers based on 4-vinylpyriding - divinylbenzene copolymer
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Some properties of the strong base anion exchangers based on 4-vinylpyriding - divinylbenzene copolymer

机译：基于4-乙烯基吡啶-二乙烯基苯共聚物的强碱阴离子交换剂的一些性质。

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摘要

Among the strong base anion exchangers, those based on quaternized 4-vinylpyridine divinylbenzene (DVB) copolymers can be an alternative of the above-mentioned exchangers, in certain applications. Anion exchangers with 1-alky1-4-vinylpyridinium structural units are used in recovery and purification processes of plutonium from scrap materials. The process consists of treatment of these materials with nitric acid leading to the anionic Pu (IV) nitrato complex, it being retained by means of the strong base anion exchangers. The advantage of the quaternized 4-vinylpyridine based exchangers compared to classical ones, based on styrene - DVB copolymers, is due to the much higher resistance to nitric acid of the pyridine aromatic rings than of those of styrene which are much more susceptible to the nitration reaction~1.
机译：在强碱阴离子交换剂中，在某些应用中，基于季铵化的4-乙烯基吡啶二乙烯基苯（DVB）共聚物的那些可以是上述交换剂的替代方案。具有1-烷基1-4-乙烯基吡啶结构单元的阴离子交换剂可用于从废料中回收和纯化p。该方法包括用硝酸处理这些物质，生成阴离子型Pu（IV）硝酸根络合物，并通过强碱阴离子交换剂将其保留。与传统的基于苯乙烯-DVB共聚物的交换器相比，基于季铵化的4-乙烯基吡啶的交换器的优势在于，吡啶芳环对硝酸的耐受性要比对硝化反应敏感的苯乙烯更高。反应〜1。

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