Influence of K+ and Na+ Ions on Direct Electrosynthesis of Solid K2FeO4 and Comparison of the Physicochemical Properties of K2FeO4 Samples

被引：1
|
作者：
Xu, Zhihua [1 ]
Yan, Zhaoxiong [2 ]
Zhou, Yaping [1 ]
Hu, Juncheng [3 ,4 ]
机构：
[1] Huanggang Normal Univ, Coll Chem Engn, Huanggang 438000, Peoples R China
[2] Huanggang Normal Univ, Coll Phys Sci & Technol, Huanggang 438000, Peoples R China
[3] S Cent Univ Nationalities, Key Lab Catalysis & Mat Sci, State Ethn Affairs Commiss, Wuhan, Peoples R China
[4] S Cent Univ Nationalities, Minist Educ, Wuhan, Peoples R China
来源：
CHEMICAL ENGINEERING COMMUNICATIONS | 2012年 / 199卷 / 02期
关键词：
Efficiency; Electrosynthesis; Iron wire gauze; K2FeO4; ELECTROCHEMICAL PREPARATION; ANODIC-DISSOLUTION; FERRATE(VI); IRON; OXIDATION; KINETICS; WATER; ELECTROLYTE; PROGRESS;
D O I：
10.1080/00986445.2011.591212
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The influence of K+ and Na+ ions on the direct electrosynthesis of solid K2FeO4 was investigated in 14M OH- solutions. At 50 or 60 degrees C, the maximum current efficiency of electrosynthesis is obtained in 9M KOH +5M NaOH solution. The maximum current efficiency of 64.9% is obtained at 60 degrees C in 9M KOH +5M NaOH solution, similar to the maximum value of 63.9% at 70 degrees C in 14M KOH solution in the temperature ranges studied. The result shows that the temperature at which the maximum current efficiency is obtained in 9M KOH +5M NaOH is much lower than that in 14M KOH. Solid K2FeO4 powders directly electrosynthesized in 9M KOH +5M NaOH and 14M KOH solutions were characterized by Fourier transform-infrared spectrometry (FT-IR), scanning electron microscopy (SEM), and X-ray diffraction (XRD), and their electrochemical performance was investigated by means of galvanostatic discharge. The result shows that the two samples have similar physical properties and discharge performance.
引用
收藏
页码：178 / 188
页数：11
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