Infrared spectra analysis of O-H on aggregate structure formation of oleamide in sulfuric acid solution

被引：4

作者：

Cao, Huiyun ^{[1
]}

Wu, Xue ^{[1
]}

Chang, Zhidong ^{[1
]}

Li, Wenjun ^{[1
]}

Dong, Bin ^{[1
]}

Jin, Qiong ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Dept Chem & Chem Engn, Beijing 100083, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2015年 / 145卷

基金：

中国国家自然科学基金;

关键词：

Sulfuric acid; Amide; Aggregation structure; FT-IR; CENTER-DOT-O; AB-INITIO; SOLVENT-EXTRACTION; VISCOELASTIC SCUM; IONIC LIQUIDS; NITRIC-ACID; AMIDES; WATER; TRIOCTYLAMINE; EQUILIBRIA;

D O I：

10.1016/j.seppur.2015.03.010

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Fourier transform infrared spectrum (FT-IR) combined with Gaussian function linear fitting is applied to analyze the aggregation structure in the system of oleamide mixed with sulfuric acid aqueous solution. The possible aggregation structure is proposed according to the shifts of hydroxyl peaks and the changes of their percentage areas. Results show that the interaction modes between sulfuric acid and oleamide vary with the different proportions of two ingredients. When the molar ratio of sulfuric acid to oleamide is low, the major forms of water existing in the system are bulk-like water and the water combining with N+-H as N+-H...O-H-2. With the increase of the molar ratio of sulfuric acid to oleamide, N+ forms ion-pair complex through attracting sulfate radical. That may be responsible to the scum-like aggregation. (C) 2015 Published by Elsevier B.V.

引用

页码：98 / 103

页数：6

共 35 条

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