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Citation: WANG Guo-Fu, LIU Yue-Long, DING Yue-Min, RAO Gui-Shi, WU Zhi-Xiang, YI Fei, ZHONG Qi-Ling, REN Bin, TIAN Zhong-Qun. Electrocatalytic Properties of Electrodes of Sn Dispersed in Pt for Ethylene Glycol Oxidation[J]. Chinese Journal of Applied Chemistry, ;2008, 25(7): 810-814. shu

Electrocatalytic Properties of Electrodes of Sn Dispersed in Pt for Ethylene Glycol Oxidation

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a Chemistry and Chemical Engineering College of Jiangxi Normal University, Nanchang 330022;
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b Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, State Key Laborary for Physical Chemistry of The Solid Surface, Xiamen;
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c Applied Chemistry Department, Science and Technology Teacher's College, Nanchang

Corresponding author: ZHONG Qi-Ling,
Received Date: 22 June 2007
Available Online: 21 September 2007
Fund Project: 厦门大学固体表面物理化学国家重点实验室基金(200511) (200511)江西省自然科学基金(0620025)资助项目 (0620025)

The catalysing activities of Pt/Pt and Pt-Sn/Pt electrodes with different Pt:Sn ratios were investigated with conventional electrochemical technique for ethylene glycol (EG) oxidation.The self-dissociation phenomenon of EG to produce strong adsorption intermediate CO_ad at Pt/Pt and Pt-Sn/Pt electrodes was found for the first time.And with the additive of Sn the self-oxidation dissociation of EG at Pt-Sn/Pt electrodes was suppressed.The adsorption quantity of CO produced by the self oxidation dissociation of EG at Pt-Sn/Pt electrodes decreased with increasing Sn:Pt ratio (from 4:1 to 3:2).The apparent activation energy of EG electro-oxidation also decreased (from 44.21 to 32.11 kJ/mol) with increasing Sn-Pt ratio.Compared with Pt/Pt electrode,the onset oxidation potential and apex oxidation potential of EG oxidation shifted negatively by 195 and 105 mV respectively,and the current inreased from 0.117 1 to 0.148 1 mA.
- Ethylene Glycol,
- self-dissociation,
- electro-oxidation,
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