离子液体掺杂聚苯胺催化合成水杨酸异戊酯  

Synthesis of isoamyl salicylate by catalytic action of ionic liquid doped polyaniline

作　　者：滕俊江[1] 张庆[1] 林建明[1] 

机构地区：[1]广东石油化工学院化学与生命科学学院,广东茂名525000

出　　处：《日用化学工业》2012年第2期126-128,共3页China Surfactant Detergent & Cosmetics

基　　金：广东省科技计划资助项目(2009B020312016)

摘　　要：以聚苯胺PAn和自制离子液体[Hnmp]HSO4为原料,制备了[Hnmp]HSO4掺杂率为14.2%(质量分数)的催化剂PAn-[Hnmp]HSO4。以PAn-[Hnmp]HSO4为催化剂,水杨酸和异戊醇为原料合成了水杨酸异戊酯,考察了PAn-[Hnmp]HSO4的催化活性,通过正交试验探讨各因素对反应的影响。结果表明,在n(水杨酸)∶n(异戊醇)=1∶6,催化剂用量为反应物料总质量的6%,回流反应时间为3 h,带水剂环己烷用量为反应物总质量40%的较佳条件下,产品收率达93.52%,纯度经气相色谱分析大于99.0%。催化剂重复使用7次后,产品收率仍大于90.0%。Isoamyl salicylate was synthesized from salicylic acid and isoamyl alcohol with ionic liquid HSO4 doped polyaniline（PAn-HSO4） as catalyst.The catalyst was prepared from polyaniline and ionic liquidHSO4.Doping ratio（mass fraction） of the ionic liquid is 14.2%.Factors that influencing the product yield were investigated and optimum reaction conditions were obtained by orthogonal experiment.Results showed that under optimal conditions：n（salicylic acid）∶ n（isoamyl alcohol）=1∶ 6;dosage of the catalyst PAn-HSO4 6%（mass）;dosage of water stripping agent cyclohexane 40%;and reaction time 3 h;yield and purity of isoamyl salkylate achieves 93.52% and 99.0% respectively.After the catalyst was reused for 7 times,yield of isoamyl salicylate is still higher than 90.0%.

关 键 词：水杨酸异戊酯 离子液体 聚苯胺 催化合成 

分 类 号：TQ245.24[化学工程—有机化工]