高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (4): 548.

• 论文 • 上一篇    下一篇

乙二醇在铂电极上吸附和氧化过程的现场FTIR反射光谱研究(Ⅱ)──碱性介质

陈爱成, 孙世刚   

  1. 厦门大学固体表面物理化学国家重点实验室、化学系, 厦门, 361005
  • 收稿日期:1993-07-15 修回日期:1993-11-25 出版日期:1994-04-24 发布日期:1994-04-24
  • 通讯作者: 孙世刚
  • 作者简介:陈爱成,男,27岁,硕士,助研.
  • 基金资助:

    国家自然科学基金

In Situ FTIR Reflection Spectroscopic Studies of Adsorption and Oxidation of Ethylene Glycol on Platinum Electrode(Ⅱ)──Alkaline Media

CHEN Ai-Cheng, SUN Shi-Gang   

  1. State Key Lab. for Phys. Chem. of the Solid Surf., Chem. Dept., Xiamen Univ., Xiamen, 361005
  • Received:1993-07-15 Revised:1993-11-25 Online:1994-04-24 Published:1994-04-24

摘要: 运用循环伏安和现场FTIR反射光谱研究了碱性介质中乙二醇在铂电极上的吸附和氧化行为。结果表明,乙二醇的氧化与溶液酸碱性密切相关,除成功地检测到CH2OH-COO---OOC-COO-等中间产物及CO2、COO32-等最终产物外,还发现乙二醇氧化过程中有乙烯酮中间体生成。

关键词: 乙二醇, 电氧化, 铂电极, 碱性介质, 现场FTIR反射光谱

Abstract: The electrooxidation of ethylene glycol (EG) in alkaline media has been investigated with in situ FTIRspectroscopy and cyclic voltammetry.The main products such as CO2 and were detected clearly.Besides CH2OHCOO- and -OOC-COO- species, a new intermediate,  (with its IR absorption band at 2027cm-1 in 0.1 mol/Land at 2036 cm-1 in 0.05 mol/L NaOH solution), was determined and a possible mechanism to form this intermediate was proposed.

Key words: Ethylene glycol, Electrooxidation, Pt electrode, Alkaline media, In situ FTIR

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