Colloidal properties of octadecylamine hydrochloride and the wettability of KCl crystal surface in different saturated salt solutions

被引：6

作者：

Li, Enze ^{[1
]}

Duan, Pingmei ^{[1
]}

Du, Zhiping ^{[1
]}

Li, Da ^{[1
]}

Cheng, Fangqin ^{[1
]}

机构：

[1] Shanxi Univ, Inst Resources & Environm Engn, State Environm Protect Key Lab Efficient Utilizat, 92 Wucheng Rd, Taiyuan 030006, Peoples R China

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2016年 / 223卷

基金：

中国国家自然科学基金;

关键词：

Octadecylamine hydrochloride; Saturated salt solutions; Turbidity; Surface activity; Contact angle; MOLECULAR-DYNAMICS SIMULATION; AGGREGATION BEHAVIOR; WATER-STRUCTURE; PART I; FLOTATION; MG2+; ADSORPTION; SYSTEMS; IONS; CA2+;

D O I：

10.1016/j.molliq.2016.08.039

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Froth flotation is still an efficient technique for KCl production from low grade and complex systems containing various ions. In this work, the colloidal properties of one common collector, octadecylamine hydrochloride (ODA), in different saturated salt solutions at different temperature are investigated systematically. The results show that the turbidity of salt solutions increased substantially with the concentration of ODA increasing and the ODA colloidal particles aggregate seriously in the presence of MgCl2. Compared with ODA aqueous solutions, the surface activity and the critical aggregate concentration (CAC) of ODA became lower in saturated salt solutions. With the increase of MgCl2 percentage, the CAC values of ODA solution decreased gradually, while the CAC value of KCl-MgCl2 saturated solution was the lowest. The temperature has a great influence on the turbidity and surface activity of ODA aqueous solution, however, the effect is slight in saturated salt solutions. In addition, the salt solutions with MgCl2 result in lower contact angle on KCl crystal surface indicating that the adsorption of ODA molecules can be inhibited in the salt solutions with MgCl2. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：107 / 111

页数：5

共 21 条

[21] Synthesis, surface properties, crystal structure and dye sensitized solar cell performance of TiO2 nanotube arrays anodized under different voltages [J].

Cirak, Burcu Bozkurt ;

Karadeniz, Sibel Morkoc ;

Kilinc, Tuba ;

Caglar, Bulent ;

Ekinci, Ali Ercan ;

Yelgin, Huseyin ;

Kurekci, Mehmet ;

Cirak, Cagri .

VACUUM, 2017, 144 :183-189

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