酸性可控的蒙脱土制备及其催化香兰醇合成香兰基丁醚  

Preparation of acid-controlled montmorillonite and its catalytic synthesis of vanillin butyl ether from vanillyl alcohol

作　　者：赵曼玉 张鹏 张朋泽 朱明远 ZHAO Manyu;ZHANG Peng;ZHANG Pengze;ZHU Mingyuan(School of Chemistry&Chemical Engineering,Yantai University,Yantai 264003,Shandong,China)

机构地区：[1]烟台大学化学化工学院,山东烟台264003

出　　处：《化工进展》2024年第12期6925-6932,共8页Chemical Industry and Engineering Progress

基　　金：山东省自然科学基金(ZR2023QB041);山东省泰山学者青年专家支持计划(tsqn202103051)。

摘　　要：使用不同浓度的盐酸溶液对钠基蒙脱土进行处理,考察不同酸浓度处理对蒙脱土结构及对香兰醇反应合成香兰基丁醚的影响。表征结果显示:对比钠基蒙脱土,蒙脱土经酸化处理后结构及酸性的变化较为明显,酸处理浓度较低时,蒙脱土层状骨架结构未受明显影响,酸处理浓度较高时,蒙脱土层状骨架结构遭到破坏;随着酸处理浓度的增加,催化剂比表面积逐渐增加,酸性先升高后降低,在酸处理浓度为0.11mol/L时,催化剂酸性最高,催化性能最好,所获得的香兰醇转化率和香兰基丁醚收率分别为99.9%和93.6%;对催化剂构效关系研究证实催化性能与催化剂酸性呈现线性正相关性,说明催化性能受蒙脱土结构和酸性所主导,在维持蒙脱土结构基础上提高酸性有助于提高催化活性。A series of montmorillonites were treated by using hydrochloric acid solutions with different concentrations,and the effect of treating montmorillonite with different acid concentrations on the conversion of vanillyl alcohol to vanillyl butyl ether was investigated.Characterization results showed that compared to sodium-based montmorillonite,it was found that the structure and acidity of acid-activated montmorillonite changed significantly,and the lamellar skeleton structure of montmorillonite was not significantly affected at a lower concentration of acid treatment,while the lamellar skeleton structure of montmorillonite was destroyed at a higher concentration of acid treatment.With the increase of acid treatment concentration,the specific surface area of the catalyst increased gradually,and the acidity was increased firstly and then decreased.The highest acidity and the best catalytic performance were obtained at the acid treatment concentration of 0.11mol/L,and the obtained vanillin alcohol conversion and vanillyl butyl ether yields were 99.9%and 93.6%,respectively.The study on the structure-performance relationship of the catalyst confirmed that the catalytic performance showed a linear positive correlation with the acidity of the catalyst,indicating that the catalytic performance was dominated by the structure of the montmorillonite and acidity.On the basis of maintaining the montmorillonite structure,the increase of the acidity could increase the catalytic activity.

关 键 词：香兰醇 蒙脱土 酸处理 香兰基丁醚 

分 类 号：TQ658[化学工程—精细化工]