【作者】 杨妙； 连弘扬； 庞树峰； 张韫宏；

【Author】 YANG Miao;LIAN Hong-yang;PANG Shu-feng;ZHANG Yun-hong;Institute of Chemical Physics,Beijing Institute of Technology;

【机构】 北京理工大学化学物理研究所；

【摘要】 利用傅里叶变换显微红外光谱仪(micro-FTIR)研究臭氧、二氧化硫与不饱和脂肪酸(UFAs)之间的非均相化学反应。通过分析实验光谱发现,臭氧和二氧化硫在油酸和亚麻酸的油膜上都能发生反应,生成含有羟基和酯基官能团的臭氧化物以及硫酸等产物。油酸与亚麻酸的分子结构是比较相似的,但是不饱和程度不一样,油酸含有一个双键,而亚麻酸含有三个C=C双键。从实验结果中明显可以看出亚麻酸反应后的臭氧化物较多且反应速率快。更多还原

【Abstract】 This study focuses on the heterogeneous reactions of O₃ and SO₂ with UFAs by using microscopic Fourier transform infrared（micro-FTIR） spectrometer.By analyzing the experimental spectrums,it was found that ozone and sulfur dioxide can react with oil film of oleic acid and linolenic acid,and produce ozonide and sulfuric acid products containing hydroxyl and ester functional groups.The molecular structures of oleic acid and linolenic acid are relatively similar,but the degree of unsaturation is not the same.Oleic acid contains one double bond and linolenic acid contains three C=C double bonds.From the experimental results,it can be clearly seen that the linolenic acid reaction has more ozonation and a faster reaction rate.更多还原