...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Chemistry and Physics >Preparation of gold powders by means of redox-active extractive systems
【24h】

Preparation of gold powders by means of redox-active extractive systems

机译：氧化还原活性萃取体系制备金粉

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Solvent extraction of gold by means of two S-decyldithizone derivatives was studied, where partial precipitation of the gold and oxidation of the extractants were observed. Gold was recovered from the loaded organic phases by reduction as fine particles, and the extractants could be reduced and fully regenerated. The efficiency of extractant regeneration increased with increasing ascorbic acid concentration. In the case of reduction with sodium borohydride, the best reduction efficiency was achieved by use of an alkaline borohydride solution. A scanning electron microscopy method has been used to characterise the precipitated gold powders. The presence of the carboxylic group on one of the aromatic rings of the substituted S-decyldithizone greatly influences the morphology and size of the produced metal particles.
机译：研究了通过两种S-癸二噻唑酮衍生物的溶剂萃取金，观察到金的部分沉淀和萃取剂的氧化。通过还原以细颗粒的形式从负载的有机相中回收金，萃取剂可以还原并完全再生。提取剂再生的效率随着抗坏血酸浓度的增加而增加。在用硼氢化钠还原的情况下，通过使用碱性硼氢化物溶液可获得最佳的还原效率。已经使用扫描电子显微镜法表征沉淀的金粉。羧基在取代的S-癸二噻唑酮的一个芳环上的存在极大地影响所产生的金属颗粒的形态和尺寸。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号