| 磷钨酸盐催化苯甲醛的缩醛化反应 |
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| 引用本文： | 杨 星,王 欣,陈 平.磷钨酸盐催化苯甲醛的缩醛化反应[J].辽宁石油化工大学学报,2015,35(6):1. |
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| 作者姓名： | 杨 星 王 欣 陈 平 |
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| 作者单位： |
( 辽宁石油化工大学, 辽宁抚顺1 1 3 0 0 1) |
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| 基金项目： | 辽宁省自然科学基金项目( 2 0 1 2 0 2 1 2 8) 。 |
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| 摘 要： | 利用磷钨酸( HPW) 和 A l ( NO3) 3·9H2O合成 A l PW1 2O4 0, 以其为催化剂、 苯甲醛和1, 2 - 丙二醇为原料、 环己烷为带水剂, 进行缩合反应, 考察了催化剂的预处理温度、 带水剂体积、 原料的物质的量比、 反应时间、 催化剂质量及油浴温度等因素对苯甲醛转化率的影响。结果表明, 最佳反应条件为: 催化剂预处理温度为1 5 0℃, 带水剂体积为7mL, n( 醇) ∶n( 醛) =2. 0∶1, 反应时间为3h, 催化剂质量为0. 7g, 油浴温度为1 3 0℃。在最佳反应条件下进行反应, 苯甲醛的转化率达到9 8. 8 3%。
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| 关 键 词： | 磷钨酸 苯甲醛1 2 - 丙二醇缩醛 1 2 - 丙二醇 苯甲醛 催化 |
Tungstate Phosphorus Compounds Catalytic Synthesis of Acetals |
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| Yang Xing,Wang Xin,Chen Ping.Tungstate Phosphorus Compounds Catalytic Synthesis of Acetals[J].Journal of Liaoning University of Petroleum & Chemical Technology,2015,35(6):1. |
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| Authors: | Yang Xing Wang Xin Chen Ping |
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| Affiliation: | Liaoning Shihua University, Fushun Liaoning 113001, China） |
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| Abstract: | A l PW1 2O4 0 was prepared by phosphotungstic acid and Al(NO3)3?9H2O and used as catalyst to catalyze the condensation of benzaldehyde with 1,2 propylene glycol using cyclohexane as water trapping reagent. The reaction condition including catalyst pretreatment temperature, amount of cyclohexane, molar ratio of starting materials, reaction time, dosage of catalyst and oil bath temperature were investigated. The results show thatA l PW1 2O4 0 is a good catalyst for the condensation of benzaldehyde with 1, 2 propylene glycol. The optimal reaction condition were as followed：n (alcohol)∶n(aldehyde)=2.0∶1, catalyst pretreatment at 150 ℃, 0.7 g of catalyst, 7 mL of cyclohexane and 2.6% total mass of starting material at 130 ℃ for 3 h. The conversion of benzaldehyde can reach up to 98.83% under optimal condition. |
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| Keywords: | Phosphotungstic acid Benzaldehyde 1 2 propylene glycol acetal 1 2 propylene glycol Benzaldehyde Catalysi |
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