| 苯甲醛-过二硫酸盐体系中苯甲醛的极谱催化波 |
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| 引用本文： | 宋俊峰,薛静,过玮. 苯甲醛-过二硫酸盐体系中苯甲醛的极谱催化波[J]. 催化学报, 2000, 21(5): 437-440 |
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| 作者姓名： | 宋俊峰 薛静 过玮 |
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| 作者单位： | 西北大学分析科学研究所西安 710069 |
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| 基金项目： | 国家自然科学基金;29875017; |
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| 摘 要： | Both polarographic reduction wave and catalytic wave of benzaldehyde were studied in 0 1 mol/L NH 4Cl NH 3·H 2O (pH 9 8) buffer solution. The results show that benzaldehyde is reduced in 1e, 1H + process to an intermediate free radical ArCHOH ·. ArCHOH · reacts with neutral molecule ArCHO to form a dimer (ArCHO ArCHOH) ·. The dimer is further reduced in 1e, 1H + process. In the presence of oxidant K 2S 2O 8, a polarographic catalytic wave of benzaldehyde is produced due to the oxidation of ArCHOH · by both K 2S 2O 8 and its intermediate SO - 4 · to regenerate benzaldehyde. The apparent rate constant of the oxidization reaction is 316 mol/(L·s).
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| 关 键 词： | 极谱法 循环伏安法 电催化 电分析化学 极谱催化波 |
| 文章编号： | 0253-9837(2000)05-0437-04 |
| 收稿时间： | 2000-10-25 |
Polarographic Catalytic Wave of Benzaldehyde in Benzaldehyde-Peroxydisulfate System |
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| SONG Junfeng,XUE Jing,GUO Wei. Polarographic Catalytic Wave of Benzaldehyde in Benzaldehyde-Peroxydisulfate System[J]. Chinese Journal of Catalysis, 2000, 21(5): 437-440 |
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| Authors: | SONG Junfeng XUE Jing GUO Wei |
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| Abstract: | |
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| Keywords: | benzaldehyde free radical peroxydisulfate potassium polarographic catalytic wave |
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