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

页码：178 / 188

页数：11

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