计时安培法
循环伏安法
粒径
材料科学
高岭石
傅里叶变换红外光谱
热处理
扫描电子显微镜
电化学
钛
介电谱
杂质
石英
粒子(生态学)
化学工程
溶解
分析化学(期刊)
矿物学
核化学
冶金
化学
电极
复合材料
地质学
色谱法
有机化学
物理化学
工程类
海洋学
作者
José de Jesús Pérez Bueno,Víctor Esteban Reyes-Cruz,José de Jesús Pérez Bueno,Elda Marlem Lozada Ascencio,Felipe Legorreta García
标识
DOI:10.1016/j.clay.2017.06.004
摘要
In this work, studies on characterization and electrochemical treatment of kaolin from the municipality of Agua Blanca, Hidalgo, Mexico were carried out, in order to identify its properties and establish the operating conditions for an electrochemical purification treatment. Different characterization techniques were used in order to quantify this clay characteristics, such as X-ray diffraction, scanning electron microscopy, analysis of the whiteness index, particle size, FTIR, Induced Coupled Plasma Spectroscopy, Z potential, cyclic voltammetry, chronopotentiometry and chronoamperometry. This study shows that the tested clay had a high content of kaolinite, but also impurities, such as: quartz, iron oxides, and titanium oxides. These impurities have an influence on the surface charge of the kaolin particles and therefore on their properties. The clay with a heat treatment exhibited a thermal behavior characteristic of this type of clays. The particle size range was between 0.5 and 100 μm with an average particle size about 15 μm. The voltammetry study revealed that a reduction processes occur in a range of 0.07 to − 1.2 V (E vs. SCE) and, when a cell potential of 3.3 V for 24 h was imposed, there was a decrease of about 43% in the amount of iron oxides present in the ore. This reduction was of particular significance for the cleaning process.
科研通智能强力驱动
Strongly Powered by AbleSci AI