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反式茴脑低温氧气氧化性质及其产物
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  • 英文篇名:Oxidation Characteristics and Products of trans-Anethole with Oxygen at Low Temperature
  • 作者:张闻扬 ; 刘雄民 ; 张强 ; 周晓迪 ; 江艳艳 ; 赖福兵
  • 英文作者:ZHANG Wen-yang;LIU Xiong-min;ZHANG Qiang;ZHOU Xiao-di;JIANG Yan-yan;LAI Fu-bing;College of Chemistry and Chemical Engineering, Guangxi University;
  • 关键词:反式茴脑 ; 氧化反应 ; 茴脑过氧化物 ; 香料与香精
  • 英文关键词:trans-anethole;;oxidation reaction;;anethole peroxide;;perfumes and essences
  • 中文刊名:JXHG
  • 英文刊名:Fine Chemicals
  • 机构:广西大学化学化工学院;
  • 出版日期:2018-04-28 16:04
  • 出版单位:精细化工
  • 年:2018
  • 期:v.35
  • 基金:国家自然科学基金(21776050,11462001)~~
  • 语种:中文;
  • 页:JXHG201808017
  • 页数:7
  • CN:08
  • ISSN:21-1203/TQ
  • 分类号:109-115
摘要
考察了反式茴脑氧化反应特性,采用自行设计的小型密闭压力容器跟踪反应压力变化,利用碘量法分析了过氧化物浓度,利用气相色谱-质谱联用仪分析了反应产物种类。实验结果表明,压力变化显示,反式茴脑氧化过程分3个阶段:首先是缓慢吸收氧气阶段;然后是快速氧化反应阶段;最后是氧化趋于结束阶段。当反应温度为95℃,反应时间为4 h时,过氧化物浓度最大为85.07 mmol/kg;反式茴脑氧化反应产物比较复杂,最主要的产物有茴香醛、乙醛、茴香环氧化物、茴香二醇、茴香偶酰等,当反应温度为55℃时,茴香醛选择性达到70.36%。
        The oxidation characteristic and pressure of trans-anethole were determined using a self-designed mini closed pressure vessel device. Peroxide concentration was measured by iodimetry, and reaction products were analyzed by gas chromatography-mass spectrometry(GC-MS). Results showed that the oxidation reaction of trans-anethole with oxygen included three stages: first, oxygen was absorbed slowly, then the oxidation reaction of trans-anethole occurred rapidly, finally, oxidation process went to end. The peroxide concentration reached a maximum value of 85.07 mmol/kg when the reaction was carried at 95 ℃ for 4 h. The oxidation products were more complicated, mainly composing of anisaldehyde, acetaldehyde, anethole epoxide, anethole diol and p-anisil. A maximum anisaldehyde selectivity of 70.36% was obtained at 55 ℃.
引文
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