Efficient ammoximation and regeneration of degraded hydroxyoxime CP150 over TS-1 molecular sieve/H2O2 system and reuse for solvent extraction of Cu(II)

IF 4.8 2区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Hydrometallurgy Pub Date : 2024-08-08 DOI:10.1016/j.hydromet.2024.106382

Qionghua Xie , Qijie Chen , Ying Yu , Qi Sun , Liangshi Wang

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引用次数: 0

Abstract

The regeneration of failed hydroxyoxime extractants in the copper hydrometallurgy industry is crucial. However, the existing regeneration system has limitations in terms of operability, yield, and environmental friendliness, which restricts its industrial application. This paper presents a clean one-pot ammoximation regeneration system for the in-situ preparation of hydroxylamine for the oximation of aldehydes, catalyzed by TS-1 with NH₃ and H₂O₂. It was tailored based on the characteristics of the degraded organic phase produced by long-term operation at the copper solvent extraction site. The developed system demonstrates an excellent regeneration conversion efficiency (>90%) for the degraded copper-extracted organic phase. Following regeneration, the copper extraction efficiency of the organic phase reaches the same level as the fresh organic phase and maintains good copper extraction stability even after multiple extraction cycles. Moreover, the phase separation performance was improved through optimization. This regeneration system meets the demand for environmentally friendly and resourceful utilization of degraded waste organic phases in copper extraction systems.

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在 TS-1 分子筛/H2O2 系统上高效胺化和再生降解羟肟 CP150 并将其重新用于溶剂萃取 Cu(II)

在铜湿法冶金工业中，失效羟肟类萃取剂的再生至关重要。然而，现有的再生系统在可操作性、产量和环保性等方面存在局限性，限制了其工业应用。本文介绍了一种清洁的单锅氨肟化再生系统，用于在 TS-1 与 NH 和 HO 催化下原位制备羟胺，用于醛的肟化反应。该系统是根据铜溶剂萃取场所长期运行产生的降解有机相的特性定制的。所开发的系统对降解的铜萃取有机相具有出色的再生转化效率（大于 90%）。再生后，有机相的铜萃取效率达到了与新鲜有机相相同的水平，即使经过多次萃取循环也能保持良好的铜萃取稳定性。此外，通过优化还提高了相分离性能。该再生系统满足了铜萃取系统中降解废有机相的环保和资源化利用需求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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.