| 用改进液相还原法制备Pd/C催化剂 |
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| 引用本文： | 陈滢,唐亚文,高颖,刘长鹏,邢巍,陆天虹.用改进液相还原法制备Pd/C催化剂[J].应用化学,2009,26(8):985-988. |
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| 作者姓名： | 陈滢 唐亚文 高颖 刘长鹏 邢巍 陆天虹 |
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| 作者单位： | (1.江苏省生物功能材料重点实验室,南京师范大学化学与环境科学学院 南京 210097；
2.哈尔滨师范大学理化学院化学系 哈尔滨；3.中国科学院长春应用化学研究所 长春 130022) |
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| 基金项目： | 科技部"八六三"计划项目，国家自然科学基金 |
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| 摘 要： | 研究了用改进液相还原法制备用作直接甲酸燃料电池(DFAFC)的炭载Pd(Pd/C)阳极催化剂制备方法，研究发现在滴加还原剂NaBH4之前，在PdCl2溶液中滴加NaOH溶液后，制得的Pd/C催化剂中Pd粒子的平均粒径和相对结晶度均比不加NaOH的小。 而且Pd粒子的平均粒径和相对结晶度与加入的NaOH溶液和PdCl2溶液的浓度比有关。 在未加NaOH时制得的Pd/C催化剂中Pd粒子的平均粒径和相对结晶度分别为20.2 nm和6.29，当加入的NaOH溶液和PdCl2溶液的浓度比为10时得到的Pd粒子的平均粒径和相对结晶度适中，分别为6.7 nm和3.45，因此，制得的Pd/C催化剂对甲酸氧化的电催化活性和稳定性均要比其它NaOH溶液和PdCl2溶液的浓度比时制得的Pd/C催化剂要好。 且该制备方法简单，具有潜在的应用前景。
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| 关 键 词： | 甲酸 直接甲酸燃料电池 炭载Pd催化剂 氢氧化钠 液相还原法 |
| 收稿时间： | 2008-06-25 |
| 修稿时间： | 2008-08-27 |
Pd/C catalyst Prepared with Improved Liquid Phase Reduction Method |
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| CHEN Ying,TANG Ya-Wen,GAO Ying,LIU Chang-Feng,GENG Wei,LU Tian-Gong.Pd/C catalyst Prepared with Improved Liquid Phase Reduction Method[J].Chinese Journal of Applied Chemistry,2009,26(8):985-988. |
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| Authors: | CHEN Ying TANG Ya-Wen GAO Ying LIU Chang-Feng GENG Wei LU Tian-Gong |
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| Institution: | (1.Jiangsu Key Laboratory of Biofunctional Materials，Department of ;
Chemistry,Nanjing Normal University,Nanjing 210097;
2.Department of Chemistry,Harbin Normal University,Harbin;
3.Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022) |
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| Abstract: | It was found that when the Pd/C catalyst as the anodic catalyst in the direct formic acid fuel cell (DFAFC) is prepared with the improved liquid phase reduction method the Pd/C catalyst with small average size and relative crystalinity of the Pd particles can be prepared if the suitable amount of NaOH is added before the addition of NaBH4. The average size and relative crystalinity of the Pd particles in the Pd/C catalyst prepared are related to the concentration ratio of NaOH and PdCl2. The average size and relative crystalinity of the Pd particles in the Pd/C catalyst prepared without addition of NaOH are 20.2 nm and 6.29, respectively. When the concentration ratio of NaOH and PdCl2 is 10 The average size and relative crystalinity of the Pd particles in the Pd/C catalyst prepared are as small as 6.7 nm and 3.45, respectively. Thus, this Pd/C catalyst showed the excellent electrocatalytic activity and stability for the oxidation of formic acid. Because the improved liquid phase reduction method is simple, it may obtain the practical application. |
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| Keywords: | NaOH |
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