EXTRACTION OF NITRIC-ACID WITH QUATERNARY AMMONIUM BASES

被引：25

作者：

CERNA, M

BIZEK, V

STASTOVA, J

ROD, V

机构：

[1] Institute of Chemical Process Fundamentals Czechoslovak Academy of Sciences, 16502 Praha 6-Suchdol

来源：

CHEMICAL ENGINEERING SCIENCE | 1993年 / 48卷 / 01期

关键词：

D O I：

10.1016/0009-2509(93)80286-Y

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Distribution of nitric acid between water or aqueous solutions of ammonium nitrate and xylene solutions of tri-n-octylmethylammonium nitrate or Nivol/2-ethylhexanol solutions of Aliquat 336 nitrate has been studied. The extraction of nitric acid has been found to increase with increasing concentration of ammonium nitrate in the aqueous phase. A mathematical model of equilibrium which includes the non-ideality in both aqueous and organic phases as well as the influence of organic diluents has been formulated and its parameters evaluated. Two complexes, QABN.HNO3 and QABN.2HNO3, have been assumed to exist in the organic phase. Formation of the former has been found to be more easy in xylene than in Nivol/2-ethylhexanol, while formation of the latter has been found not to depend on the diluent.

引用

页码：99 / 103

页数：5

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