| 掺杂Eu对Pt-Ru/C电催化氧化甲醇的活性稳定性影响 |
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| 引用本文： | 李一兵,刘世斌,王秀光,段东红,张忠林,郝晓刚.掺杂Eu对Pt-Ru/C电催化氧化甲醇的活性稳定性影响[J].稀有金属材料与工程,2011,40(3):466-469. |
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| 作者姓名： | 李一兵 刘世斌 王秀光 段东红 张忠林 郝晓刚 |
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| 作者单位： | 太原理工大学,山西,太原,030024 |
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| 基金项目： | 国家自然科学基金项目(20676088)；国家“863”项目(2006AA05Z139) |
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| 摘 要： | 应用预置活性物前驱体脉冲电沉积法制备了稀土Eu元素掺杂的Pt-Ru/C甲醇电氧化催化剂,循环伏安法考察催化剂的活性,XRD和XPS技术表征活性体的物理结构、表面元素组成。结果表明,在循环电位扫描的第15～50周期,Pt-Ru-Eu/C的活性呈现缓慢下降的趋势,在第65周期以后,活性逐渐恒定;在活性实验全程范围内其活性高于Pt-Ru/C。Pt-Ru-Eu/C活性降低的主要原因是,随着实验时间的延长,催化剂活性物表面的Eu2O3流失,纳米合金微粒的粒径增大。
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| 关 键 词： | 甲醇电催化氧化 Pt-Ru/C 稀土元素掺杂 活性稳定性 |
| 收稿时间： | 2010/12/3 0:00:00 |
Activity Stability of Pt-Ru/C Doped with Eu for Methanol Electro-Catalytic Oxidation |
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| Li Yibing,Liu Shibin,Wang Xiuguang,Duan Donghong,Zhang Zhonglin and Hao Xiaogang.Activity Stability of Pt-Ru/C Doped with Eu for Methanol Electro-Catalytic Oxidation[J].Rare Metal Materials and Engineering,2011,40(3):466-469. |
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| Authors: | Li Yibing Liu Shibin Wang Xiuguang Duan Donghong Zhang Zhonglin and Hao Xiaogang |
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| Affiliation: | Taiyuan University of Technology, Taiyuan 030024, China |
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| Abstract: | A catalyst of the Pt-Ru/C doped with Eu for methanol electro-oxidation were synthesized by the method of pulse electro-deposition of the precursor of active material impregnated in porous carbon black layer. The active stability of Pt-Ru-Eu/C was evaluated using cyclic voltammetry. And the microstructure and composition of the catalyst surface were characterized by XRD and XPS. Results show that the performances of Pt-Ru-Eu/C for methanol electro-oxidation went down slowly during the cycles of number 15 to number 50, and then went into the steady state after the cycle of number 65. However, the electro-catalytic activity of Pt-Ru-Eu/C is still higher than that of Pt-Ru/C in all the cycles of the activity test. The main reason of the low activity for methanol electro-catalytic oxidation on the Pt-Ru-Eu/C is the serious loss of the EuOx from the top atom layer and the increasing of the size of Pt-Ru-Eu alloy particles with the activity test time prolonging |
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| Keywords: | methanol electro-catalytic oxidation Pt-Ru/C rare earth element doping active stability |
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