• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Extraction mechanism and behavior fo oxalic acid by triocylamine
【24h】

Extraction mechanism and behavior fo oxalic acid by triocylamine

机译：三乙胺对草酸的萃取机理及行为

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

Oxalic acid in an aqueous solution was extracted by tri-octylamine (TOA) in n-octanol as well as in the mixture of n-octanol and kerosene. Ifrared spectroscopic analysis was performed to study the stoichiometry of complex formation. A model for the extraction equilibrium was presented and subsequently used to correlate the experimental data. The distribution coefficient increases with TOA concentration, S_0. The TOA loading increases sharply at lower aqueous phase concentration of oxalic aicd, and approaches 1.0 at higher aqueous phase concentration of oxalic acid. The effect of diluent, kerosene, on the extraction of oxalic acid depends on S_0. Kerosene apparently affects the extraction behavior at lower S_0. The infrared spectroscopic analysis result shows that (1, 2) complex between oxalic acid and amine was formed in this experimental system. The apparent chemical association constants, K_(11) and K_(12), were obtained by fitting the experimental data of extraction equilibrium, where K_(11) was much larger than K_(12).
机译：用三辛胺（TOA）在正辛醇中以及在正辛醇和煤油的混合物中萃取水溶液中的草酸。进行了质谱分析，研究了复合物形成的化学计量。提出了萃取平衡模型，随后将其用于关联实验数据。分配系数随TOA浓度S_0的增加而增加。在较低的草酸水相浓度下，TOA含量急剧增加，而在较高的草酸水​​相浓度下，TOA含量接近1.0。稀释剂煤油对草酸提取的影响取决于S_0。煤油显然会影响较低S_0时的萃取行为。红外光谱分析结果表明，在该实验系统中形成了草酸和胺之间的（1，2）络合物。通过拟合萃取平衡的实验数据获得表观化学缔合常数K_（11）和K_（12），其中K_（11）远大于K_（12）。

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