Synthesis of Benzaldehyde 1,2-Propylene Acetal Catalyzed by K5CoW12O40·3H2O

doi:10.3696/j.issn.1672-6952.2010.02.001

Journal of Liaoning Petrochemical University ›› 2010, Vol. 30 ›› Issue (2): 1-3.DOI: 10.3696/j.issn.1672-6952.2010.02.001

Synthesis of Benzaldehyde 1,2-Propylene Acetal Catalyzed by K₅CoW₁₂O₄₀·3H₂O

LAI Jun-ling, LIU Chun-sheng, LUO Gen-xiang，SHEN Fei

School of Chemistry and Materials Science，Liaoning Shihua University，Fushun Liaoning 113001, P. R. China

Received:2009-11-26 Published:2010-06-25 Online:2017-07-05

K₅CoW₁₂O₄₀·3H₂O催化合成苯甲醛1,2-丙二醇缩醛

赖君玲,刘春生,罗根祥,沈飞

辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

作者简介:赖君玲(1976-),女,辽宁大石桥市,讲师,硕士。

Abstract

Abstract:

The catalytic activity of benzaldehyde 1,2-propylene acetal was investigated from benzaldehyde and 1,2-propylene glycol in the presence of potassium dodecatungstocobaltate trihydrate (K₅CoW₁₂O₄₀·3H₂O). The effects of the cyclohexanone/1,2-propylene glycol molar ratio, the amount of the catalyst, cyclohexane dosage, the reaction time and the using regenerated catalyst on yield were studied systematically. The results show that potassium dodecatungstocobaltate trihydrate (K₅CoW₁₂O₄₀·3H₂O) is an excellent catalyst for the above reaction. The preferable experimental conditions are as follows: benzaldehyde/1,2-propylene glycol molar ratio is 1∶1.2, benzaldehyde is 0.1 mol, potassium dodecatungstocobaltate trihydrate (K₅CoW₁₂O₄₀·3H₂O) is 0.3 g, the volume of cyclohexane is 10 mL, and reaction time is 45 min. Under the above experimental conditions, the maximum yield of benzaldehyde 1,2-propylene acetal is up to 92.8%.

Key words: Benzaldehyde 1,2-propylene acetal , , Potassium dodecatungstocobaltate trihydrate (K₅CoW₁₂O₄₀·3H₂O) , Catalysis , , Acetalization

摘要： 研究了K₅CoW₁₂O₄₀·3H₂O 催化剂对苯甲醛和1,2-丙二醇为原料合成苯甲醛1,2-丙二醇缩醛的
反应的催化活性。考察了醛醇物质的量比、催化剂质量、带水剂体积、反应时间、催化剂重复使用性等因素对产品收
率的影响。结果表明,K₅CoW₁₂O₄₀·3H₂O 是缩醛反应的良好催化剂。在最佳实验条件下:苯甲醛与1,2-丙二醇
物质的量比为1∶1.2、苯甲醛物质的量为0.1mol、催化剂质量为0.3g、环己烷体积为10mL、反应时间45min,苯甲
醛1,2-丙二醇缩醛的收率最高可达92.8%。

关键词: 苯甲醛l, 2-丙二醇缩醛 , , , K₅CoW₁₂O₄₀·, 3H₂O , , , 催化 , , 缩醛反应

LAI Jun-ling, LIU Chun-sheng, LUO Gen-xiang，SHEN Fei. Synthesis of Benzaldehyde 1,2-Propylene Acetal Catalyzed by K₅CoW₁₂O₄₀·3H₂O[J]. Journal of Liaoning Petrochemical University, 2010, 30(2): 1-3.

赖君玲,刘春生,罗根祥,沈飞. K₅CoW₁₂O₄₀·3H₂O催化合成苯甲醛1,2-丙二醇缩醛[J]. 辽宁石油化工大学学报, 2010, 30(2): 1-3.

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Synthesis of Benzaldehyde 1,2-Propylene Acetal Catalyzed by K₅CoW₁₂O₄₀·3H₂O

K₅CoW₁₂O₄₀·3H₂O催化合成苯甲醛1,2-丙二醇缩醛

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