| 甲基丙烯基醛和甲基乙烯基酮水相臭氧化反应 |
| 摘要点击 1421 全文点击 1796 投稿时间：2004-06-08 修订日期：2004-09-20 |
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| 中文关键词 甲基丙烯基醛 甲基乙烯基酮 臭氧化 水相反应 过氧化物 羰基物 |
| 英文关键词 methacrolein methyl vinyl ketone ozonolysis aqueous phase reaction peroxides carbonyl compounds |
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| 中文摘要 |
| 利用实验室模拟的方法研究了甲基丙烯基醛(MAC)和甲基乙烯基酮(MVK)在大气水相中的臭氧化反应,测定了250℃±0.1℃温度和1.0×105Pa空气压力条件下生成过氧化物和二次羰基物的种类和产率.结果表明,MAC水相臭氧化生成2种羰基物(甲醛和丙酮醛)和2种过氧化物,即过氧化氢(H2O2)和羟甲基过氧化氢(HOCH2OOH ,HMHP) ,它们的产率(%)分别为49.9±2.9、26.6±3.9、4.6±0.4和10.0±0.8;同MAC类似,MVK水相臭氧化也生成甲醛、丙酮醛、H2O2和HMHP ,它们的产率(%)分别为40.8±2.2、40.7±35、6.8±0.5和10.4±0.8.对MAC和MVK水相臭氧化反应机理进行了推测,解释了各产物的生成. |
| 英文摘要 |
| The experimental simulation was employed to study the aqueous-phase ozonolysis reactions of methacrolein (MAC) and methyl vinyl ketone (MVK) in the atmosphere, at the 25.0 ℃±0.1 ℃ temperature and 1.0×105Pa pressure of air. In both MAC and MVK ozonolysis reactions in water, formaldehyde, methylglyoxal, hydrogen peroxides (H2O2) and hydroxymethyl hydroperoxides (HMHP) were found; and their yields (%) were determined: 49.9±2.9, 26.6±3.9, 4.6±0.4 and 10.0±0.8 respectively for MAC; 40.8±2.2, 40.7±3.5, 6.8±0.5 and 10.4±0.8 respectively for MVK. Finally, the reaction mechanisms are deduced to explain the formation of products observed. |
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