高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (12): 1944.

• 论文 • 上一篇    下一篇

甲基丙烯酸甲酯、甲基丙烯酸与分子氧的初始氧化反应

董宇平, 丘坤元, 冯新德   

  1. 北京大学化学与分子工程学院, 北京, 100871
  • 收稿日期:1995-12-10 出版日期:1996-12-24 发布日期:1996-12-24
  • 通讯作者: 董宇平,男,32岁,副研究员,现在北京理工大学工作.
  • 作者简介:董宇平,男,32岁,副研究员,现在北京理工大学工作.

The Initial Oxidations of MMA and MAA by Molecular Oxygen

DING Yu-Ping, QIU Kun-Yuan, FENG Xin-De   

  1. College Chemistry and Molecular Engineering, Peking University, Beijing, 100871
  • Received:1995-12-10 Online:1996-12-24 Published:1996-12-24

摘要: 本文研究了甲基丙烯酸(MAA)及其甲酯(MMA)与分子氧O2的初始氧化反应。随着通O2后密封放置时间的增加,MMA中所生成的氢过氧化物浓度逐渐增加;而MAA中却无变化。IR、NMR的分析结果表明:MMA的α-甲基发生氧化反应,生成氢过氧化物,MAA分子中-COOH 使得生成的过氧化氢基团发生进一步的分解反应,生成醛基。

关键词: 甲基丙烯酸甲酯, 甲基丙烯酸, 接触电荷转移复合物, 初始氧化反应

Abstract: Methyl methacrylate (MMA) and methylacrylic acid(MAA) can form the contact charge transfer complex(CCT) with O2,respectively.After O2 was bubbled,the concentration of hydroperoxide in MMAincreased with the increasing of oxidation time,however,it did not increase in MAA. From the IR,NMRspectra,it showed that the initial oxidation occured on the α-methyl group of MMAand MAAmolecules via MMA-O2 CCTand MAAO2 CCT,respectively. In the case of MAA,the hydroperoxide group would further decompose and produce an aldehyde group.

Key words: Methyl methacrylate, Methylacrylic acid, Contact charge transfer complex(CCT), Initial oxidation

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