| 摘要: |
| 通过Perkin法合成肉桂酸，研究了反应物物质的量比、催化剂种类及其用量、阻聚剂种类及其用量、反应温度和反应时间对肉桂酸产率的影响；实验结果表明，合成肉桂酸的最佳条件是苯甲醛与醋酸酐物质的量比为1〖DK〗∶3，以无水碳酸钾为催化剂，其用量为4.5 g，以2%的对二苯酚为阻聚剂，反应时间为2 h，反应温度为170 ℃，肉桂酸产率可达69.32%；工艺简单，操作方便，无环境污染，产品纯度高，是合成肉桂酸较为理想的方法。 |
| 关键词: 苯甲醛 醋酸酐 肉桂酸 催化合成 无水碳酸钾 |
| DOI： |
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| Research on Catalytic Synthesis Technology of Cinnamic Acid |
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HUANG Fei，QU Fei qiang，REN Xiao qiong，YAO Bing，WU Wen fang，LI Jian hua
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| Abstract: |
| By Perkin method to synthesize cinnamic acid，the influence of molar ratio of reactants，the type and dosage of the catalysts，the type and dosage of inhibitors，reaction temperature and reaction time on the yield of cinnamic acid is studied. Experiment results show that the optimal condition for cinnamic acid synthesis is the ratio of benzaldehyde to acetic anhydride 1：3，4.5g dosage of anhydrous potassium carbonate as the catalyst，2% hydroquinone as the inhibitor，2h reaction time，170 ℃ reaction temperature，and the yield of cinnamic acid can reach 69.32 percent. This technology，with simple process，easy operation，no environment pollution and high product purity，is relatively an ideal method to synthesize cinnamic acid. |
| Key words: benzaldehyde acetic anhydride cinnamic acid catalytic synthesis anhydrous potassium carbonate |
