| 对氟甲苯液相氧化制备对氟苯甲醛 |
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| 引用本文： | 方永勤,王兆岗,吕新宇.对氟甲苯液相氧化制备对氟苯甲醛[J].江苏石油化工学院学报,2011(2):32-35. |
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| 作者姓名： | 方永勤 王兆岗 吕新宇 |
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| 作者单位： | 常州大学设计研究院,江苏常州213164 |
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| 摘 要： | 以对氟甲苯为原料,Co/Mn/Br为催化体系,氧气为氧化剂,常压下液相氧化制备对氟苯甲醛,探讨了催化剂配比、催化剂用量、反应温度、溶剂用量、氧气流量对氧化反应的影响。较优工艺条件为：90℃,氧气12.5mL/min,n（Co）∶n（Mn）∶n（Br）=1∶2∶1.5,催化剂用量2.0%（以对氟甲苯计）,m（乙酸）∶m（对氟甲苯）=4∶1,反应8h,对氟甲苯转化率35.3%,对氟苯甲醛选择性57.4%。
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| 关 键 词： | 对氟甲苯 对氟苯甲醛 对氟苯甲酸 液相氧化 |
Study of the Synthesis of p-Fluorobenzaldyhyde by Oxidizing p-Fluorotoluene in Liquid Phase |
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| FANG Yong-qin,WANG Zhao-gang,LV Xin-yu.Study of the Synthesis of p-Fluorobenzaldyhyde by Oxidizing p-Fluorotoluene in Liquid Phase[J].Journal of Jiangsu Institute of Petrochemical Technology,2011(2):32-35. |
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| Authors: | FANG Yong-qin WANG Zhao-gang LV Xin-yu |
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| Affiliation: | (Institute of Design and Research,Changzhou University,Changzhou 213164,China) |
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| Abstract: | p-Fluorobenzaldehyde was prepared by oxidizing p-fluorotoluene in Co/Mn/Br catalytic system,using oxygen as oxidant under atmospheric condition.The influence of catalyst ratio and dosage,temperature,solvent amount,oxygen flow on the oxidation reaction were investigated.The optimal conditions were as follow： reaction at 90 ℃,oxygen flow 12.5 mL/min,n（Co）∶n（Mn）∶n（Br）=1∶2∶1.5,adding dosage was 2.0%（counted with the mass of p-fluorotoluene）,m（acetic acid）∶m（p-fluorotoluene）=4∶1,reaction time was 8h,the conversion of p-fluorotoluene was 35.3%,the selectivity of p-fluorobenzaldehyde was 57.4%. |
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| Keywords: | p-fluorotoluene p-fluorobenzaldehyde p-fluorobenzoic acid liquid phase oxidation |
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