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Citation: WANG Liu-Cheng, XU Hai-Sheng, ZHAO Jian-Hong, SONG Cheng-Ying, BAI Ru-Jiang. Behavior of PbO₂ Anode in the Preparation of Dichromic Acid by Electrooxidation of Chromium Sulfate[J]. Chinese Journal of Applied Chemistry, ;2003, 20(5): 483-486. shu

Behavior of PbO₂ Anode in the Preparation of Dichromic Acid by Electrooxidation of Chromium Sulfate

1.
College of Chemical Engineering, Zhengzhou University, Zhengzhou 450002

Corresponding author: WANG Liu-Cheng,
Received Date: 9 October 2002
Available Online: 30 January 2003

The active phases of electrodes were characterized by XRD,SEM and surface area measurement.It was found that the active phase of PbO₂/Ti electrode contains more β-PbO₂ and possesses larger specific surface area than that of PbO₂/Pb electrode.The electrochemical parameters in the oxidation process of Cr₂(SO₄)₃ were determined by steady-state polarization curve.The current efficiency of PbO₂/Pb and PbO₂/Ti electrodes in the preparation of dichromic acid by electrooxidation chromium sulfate and stability of the electrodes were investigated.The results showed that the PbO₂/Ti electrode exhibited better electrocatalytic activity and electrochemical stability than PbO₂/Pb electrode in the course of 800 h test.
- PbO₂ anode,
- chromium sulfate,
- electrooxidation
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Behavior of PbO2 Anode in the Preparation of Dichromic Acid by Electrooxidation of Chromium Sulfate

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通讯作者: 陈斌, bchen63@163.com

Behavior of PbO₂ Anode in the Preparation of Dichromic Acid by Electrooxidation of Chromium Sulfate