FeCl_3掺杂聚苯胺催化合成苯甲醛1,2-丙二醇缩醛  

Synthesis of Benzaldehyde 1,2-Propylene Acetal Catalyzed by Polyaniline Doped with Ferric Chloride

作　　者：何淼[1] 周海霞[1] 刘春生[1] 罗根祥[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,抚顺113001

出　　处：《应用化学》2006年第3期343-345,共3页Chinese Journal of Applied Chemistry

摘　　要：制备了PAn(聚苯胺)-FeC l3催化剂,并对其结构进行了表征。在以苯甲醛和1,2-丙二醇为原料合成苯甲醛1,2-丙二醇缩醛的反应中,探讨了PAn-FeC l3催化剂对缩醛反应的催化活性。考察了原料配比、催化剂用量、带水剂用量、反应时间诸因素对产品收率的影响。结果表明,PAn-FeC l3是合成苯甲醛1,2-丙二醇缩醛的良好催化剂,在n(苯甲醛)∶n(1,2-丙二醇)=1∶1.4、催化剂用量为反应物料总质量分数的0.98%、带水剂环己烷用量为14 mL、反应时间2 h的优化条件下,苯甲醛1,2-丙二醇缩醛的收率可达93%。A new enviromental-freiendly catalyst, PAn-FeCl3 was prepared. Benzaldehyde 1,2-propylene acetalization was carried out with benzaldehyde and 1,2-propylene alcohol in the presence of polyaniline doped with ferric chloride. Factors influencing the product yield were discussed and optimum conditions were found. Experimental result shows that polyaniline doped with ferric chloride is an excellent catalyst. Under the conditions where a ratio of n （benzaldehyde） ： n （ 1,2-propylene ） = 1 ： 1.4, ω （ polyaniline doped with ferric chloride） =0. 98% , cyclohexane 14 mL and reaction time 2.0 h, the yield of benzaldehyde 1,2-propylene acetal can reach 93%.

关 键 词：缩醛 三氯化铁 聚苯胺 掺杂 

分 类 号：O623.5[理学—有机化学]