The electrochemical generation of ferrate at porous magnetite electrode

被引：33

作者：

Ding, Z ^{[1
]}

Yang, CC

Wu, Q

机构：

[1] Zhengzhou Univ, Dept Chem, Zhengzhou 450052, Henan, Peoples R China

[2] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2004年 / 49卷 / 19期

关键词：

porous magnetite; ferrate; cathodic polarization; current efficiency;

D O I：

10.1016/j.electacta.2004.01.031

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this work, ferrate(VI) was generated by the electrochemical oxidation of porous magnetite electrodes, made by melting pure magnetite grains. Pretreatment of the anode by cathodic polarization was necessary for ferrate(VI) generation and the achievement of high current efficiency. A electrolyte composition was found to be 16 M NaOH. In this electrolyte, the effect of anode current density J on Fe(VI) synthesis rate, current efficiency, and internal cell temperature were studied. An optimum result was obtained at J = 3.3 mA cm(-2) 30degreesC in 16 M NaOH for 5 h. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：3155 / 3159

页数：5

共 30 条

[1]

[Anonymous], 1900, Z ELEKTROCHEM

[2] Electrochemical production of ferrate(VI) using sinusoidal alternating current superimposed on direct current: grey and white cast iron electrodes [J].

Bouzek, K ;

Lipovska, M ;

Schmidt, M ;

Rousar, I ;

Wragg, AA .

ELECTROCHIMICA ACTA, 1998, 44 (04) :547-557

[3] Influence of electrolyte composition on current yield during ferrate(VI) production by anodic iron dissolution [J].

Bouzek, K ;

Schmidt, MJ ;

Wragg, AA .

ELECTROCHEMISTRY COMMUNICATIONS, 1999, 1 (09) :370-374

[4]

Bouzek K, 1999, J CHEM TECHNOL BIOT, V74, P1188, DOI 10.1002/(SICI)1097-4660(199912)74:12<1188::AID-JCTB170>3.0.CO

[5]

2-0

[6] THE STUDY OF ELECTROCHEMICAL PREPARATION OF FERRATE(VI) USING ALTERNATING-CURRENT SUPERIMPOSED ON THE DIRECT-CURRENT - FREQUENCY-DEPENDENCE OF CURRENT YIELDS [J].

BOUZEK, K ;

ROUSAR, I .

ELECTROCHIMICA ACTA, 1993, 38 (13) :1717-1720

[7] Influence of electrolyte hydrodynamics on current yield in ferrate(VI) production by anodic iron dissolution [J].

Bouzek, K ;

Schmidt, MJ ;

Wragg, AA .

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS, 2000, 65 (01) :133-140

[8]

BOUZEK K, 1993, J APPL ELECTROCHEM, V23, P1317, DOI 10.1007/BF00234818

[9]

Bouzek K, 1996, J APPL ELECTROCHEM, V26, P919, DOI 10.1007/BF00242043

[10] Electrochemical production of ferrate(VI) using sinusoidal alternating current superimposed on direct current. Pure iron electrode [J].

Bouzek, K ;

Flower, L ;

Rousar, I ;

Wragg, AA .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1999, 29 (05) :569-576

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