MCM-41负载磷钨杂多酸催化合成苯甲醛乙二醇缩醛  

Catalytic Synthesis of Benzaldehyde Glycol Acetal with H_3PW_(12)O_(40)/MCM-41 as Catalyst

作　　者：王帮进[1] 段爱红[1] 忽锦峰[1] 

机构地区：[1]云南师范大学化学化工学院,云南昆明650092

出　　处：《云南师范大学学报（自然科学版）》2010年第5期40-42,共3页Journal of Yunnan Normal University:Natural Sciences Edition

摘　　要：以介孔MCM-41负载磷钨杂多酸(PW)为催化剂,采用苯甲醛和乙二醇为原料,合成了苯甲醛乙二醇缩醛。实验考察了醛醇摩尔比、催化剂用量、反应时间、反应温度诸因素对收率的影响。实验表明:PW/MCM-41是合成苯甲醛乙二醇缩醛的良好催化剂,最佳反应条件为:n(苯甲醛):n(乙二醇)=1:1.75,催化剂的质量为反应物总质量的1.5%,反应温度为120℃,反应时间1.0h。上述反应条件下,苯甲醛乙二醇缩醛的收率可达73.29%左右。Benzaldehyde glycol acetal was synthesized by the reaction of benzaldehyde and glycol with phosphotungstic heteropolyacid （PW） loaded on mesoporous MCM -41 as catalyst. The effect of the molar ratio of n （benzaldehyde）/n （glycol）, the amount of catalyst, the reaction temperature and time on the product yield was investigated. The experimental results show that PW/MCM -41 is an excellent catalyst for the synthesis of benzaldehyde glycol acetal. The optimal reaction conditions are as follows： the molar ratio of n （benzaldehyde）/n（glycol） is 1/1.75, the concentration of catalyst is 1.5 wt. %, the reaction temperature and time are 120 C and 1.0 h. A yield of 73.29 % of benzaldehyde glycol acetal can be obtained under above the conditions.

关 键 词：介孔载体 固载杂多酸 催化 缩醛反应 

分 类 号：Q621.251[生物学—生物物理学]