稀土复合固体超强酸SO_(4)^(2-)/ZrO_(2)-MoO_(3)-Yb_(2)O_(3)催化合成乙酸异龙脑酯的研究  

Study on the Synthesis of Isobornyl Acetate Catalyzed by Rare Earth Composite Solid Superacid SO_(4)^(2-)/ZrO_(2)-MoO_(3)-Yb_(2)O_(3)

作　　者：吴瑾 卢晓春[2] 吴粦华[2] Wu Jin;Lu Xiaochun;Wu Linhua(Department of resource Engineering,Longyan University,Longyan 364012;Department of Chemistry and Materials Engineering,Longyan University,Longyan 364012,China)

机构地区：[1]龙岩学院资源工程学院,福建龙岩364012 [2]龙岩学院化学与材料学院,福建龙岩364012

出　　处：《广东化工》2023年第21期42-44,共3页Guangdong Chemical Industry

基　　金：龙岩市奇迈科技创新基金资助项目(2020LYF10001)。

摘　　要：通过沉淀-浸渍方法制备稀土复合固体超强酸SO_(4)^(2-)/ZrO_(2)-MO_(3)-Yb_(2)O_(3),加入稀土元素Yb以改良固体超强酸的性能,通过Hammett酸指示剂法检测固体酸的酸强度。以莰烯和乙酸为原料,由自制的固体超强酸催化合成乙酸异龙脑酯。通过CG-MS对酯含量进行测定,研究了催化剂用量、MoO_(3)/ZrO_(2)、焙烧温度、反应时间和反应温度等对酯化率的影响。结果表明:经600℃焙烧的MoO_(3)/ZrO_(2)为8%的催化剂,在其用量占总反应物的质量分数为3%,反应温度80℃,反应时间6 h的条件下,酯化率可达到76%。Rare earth composite solid superacid SO_(4)^(2-)/ZrO_(2)-MO_(3)-Yb_(2)O_(3)was prepared by precipitation impregnation method,and rare earth elements Yb were added to improve the performance of the solid superacid.The acid strength of the solid superacid was determined by the Hammett acid indicator method.Isobornyl acetate was synthesized using camphene and acetic acid as raw materials using a self-made solid superacid catalyst.The ester content was measured by CG-MS,and the effects of catalyst dosage,MoO_(3)/ZrO_(2),calcination temperature,reaction time,and reaction temperature on the esterification rate were studied.The results showed that the catalyst with MoO_(3)/ZrO_(2)=8%calcined at 600℃achieved an esterification rate of 76%under the conditions of a mass fraction of 3%of the total reactants,a reaction temperature of 80℃,and a reaction time of 6 hours.

关 键 词：莰烯 乙酸 稀土复合固体超强酸 催化剂 酯化 乙酸异龙脑酯 

分 类 号：TQ651.1[化学工程—精细化工]