通过阴离子交换从工业液体中回收铼,然后直接合成卤化铼盐

IF 4.8 2区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING
Evgeny Kirillov, Zhanna Bochkareva, Vladimir Semenishchev, Sergey Kirillov, Grigory Bunkov, Vladimir Rychkov
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引用次数: 0

摘要

本研究使用三种聚合物离子交换树脂对硫酸液中的过铼酸根离子进行了吸附研究。阴离子交换树脂类型 1(2-甲基-5-乙烯基吡啶与二乙烯基苯(VP-DVB)的共聚物)以及两种含有阴阳离子交换官能团的多官能树脂,即研究了类型 2(具有吡啶-2-羧酸(吡啶甲酸)官能团的羧化 VP-DVB)和类型 3(具有吡啶-2-[(甲基氨基)甲基]膦酸官能团的氨基膦化 VP-DVB)。傅立叶变换红外光谱和 XPS 光谱对吸附铼前后的树脂进行了表征。在 VP-DVB 树脂的聚合物基体中加入额外的酸性官能团后,铼阴离子交换能力略有下降。同时,多官能团树脂使盐酸剥离铼成为可能。使用这些新型多官能团树脂可以实现一种全新的卤化物铼预浓缩工艺,这将有助于低成本生产金属铼。使用真实铀浸出液进行的柱吸附实验表明,每克树脂的交换容量为 33.2 毫克铼,洗脱液中的浓缩系数为 2500。3 型树脂可以通过阴离子交换从铀浸出液中回收铼,然后从盐酸解吸液中直接沉淀六氯铼酸钾。本研究提供了一种用于铼回收的新型树脂,它具有极佳的吸附和洗脱特性,有望得到实际应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Anion exchange recovery of rhenium from industrial liquors followed by direct synthesis of a rhenium halide salt

In the present study, the sorption of perrhenate ions from sulfuric acid liquors was studied using three types of polymer ion exchange resins. An anion exchange resin type 1 (a copolymer of 2-methyl-5-vinylpyridine with divinylbenzene (VP-DVB)) as well as two polyfunctional resins containing anion and cation exchange functional groups, namely, type 2 (a carboxylated VP-DVB with pyridine-2-carboxylic acid (picolinic acid) functional group) and type 3 (an aminophosphorylated VP-DVB with pyridine-2-[(methylamino)methyl]phosphonic acid functional group), were studied. The resins before and after rhenium sorption were characterized by FT-IR spectroscopy and XPS spectroscopy. The incorporation of additional acidic functional groups into the polymer matrix of the VP-DVB resins led to a slight decrease in the rhenium anion exchange capacity. At the same time, polyfunctional resins make it possible to strip rhenium with hydrochloric acid. A completely new process for the preconcentration of rhenium as a halide compound, which will contribute to the low-cost production of metallic rhenium, can be implemented using these new polyfunctional resins. Column sorption experiments using real uranium leach liquors demonstrated an exchange capacity of 33.2 mg of Re per gram of resin and a concentration factor in the eluate of ∼2500. The possibility of anion exchange recovery of rhenium from uranium leach liquors by Type 3 resin followed by direct precipitation of potassium hexachlororhenate from hydrochloric acid desorption liquor was demonstrated. The present study provided a new resin for rhenium recovery with excellent adsorption and elution characteristics, which is a promising candidate for practical applications.

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来源期刊
Hydrometallurgy
Hydrometallurgy 工程技术-冶金工程
CiteScore
9.50
自引率
6.40%
发文量
144
审稿时长
3.4 months
期刊介绍: Hydrometallurgy aims to compile studies on novel processes, process design, chemistry, modelling, control, economics and interfaces between unit operations, and to provide a forum for discussions on case histories and operational difficulties. Topics covered include: leaching of metal values by chemical reagents or bacterial action at ambient or elevated pressures and temperatures; separation of solids from leach liquors; removal of impurities and recovery of metal values by precipitation, ion exchange, solvent extraction, gaseous reduction, cementation, electro-winning and electro-refining; pre-treatment of ores by roasting or chemical treatments such as halogenation or reduction; recycling of reagents and treatment of effluents.
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