Reactive Extraction of Nicotinic Acid with Trialkylamine in <i>n</i>-Octanol

李德亮; 于飞; 常志显

doi:10.1016/S1004-9541(12)60408-X

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Reactive Extraction of Nicotinic Acid with Trialkylamine in n-Octanol

Updated：2026-01-06

- Reactive Extraction of Nicotinic Acid with Trialkylamine in n-Octanol
- Chinese Journal of Chemical Engineering Vol. 20, Issue 5, Pages: 843-848(2012)
- Affiliations：
  
  Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University,Kaifeng,China,475004
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(12)60408-X
  CLC：
- Published：2012
- Accepted：
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-Octanol[J]. Chinese Journal of Chemical Engineering, 2012, 20(5): 843-848.
DOI：

-Octanol[J]. Chinese Journal of Chemical Engineering, 2012, 20(5): 843-848. DOI： 10.1016/S1004-9541(12)60408-X.

摘要

Abstract

The distributions of nicotinic acid (NA) between water and trialkylamine (N235) dissolved in n-octanol was studied. The complexes of N235 and NA were investigated by Fourier transformation infrared spectrometry to deduce the reaction mechanism. It was found that N235/

-octanol was an efficient extractant for extracting nicotinic acid. The favorable operation conditions were equilibrium aqueous pH 4.2 to 5.5 and initial N235 concentration0.42 mol·L

-1

. The reaction processes included the reaction between neutral N235 and neutral NA and the reaction between protonated N235 and anionic NA. Based on the mass action law and some assumptions

an expression for distribution coefficient

was proposed. The apparent extraction equilibrium constants were calculated by fitting the experimental data and the results were satisfactory.

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Reactive Extraction of Nicotinic Acid with Trialkylamine in n-Octanol

DOI：10.1016/S1004-9541(12)60408-X

摘要

Abstract

关键词

Keywords

references