改性蒙脱土催化油酸甲酯化的研究
发布时间：2018-10-22 15:58
【摘要】：采用浸渍法制备了改性对甲苯磺酸-蒙脱土固体酸催化剂,并将其应用于油酸与甲醇酯化制备油酸甲酯的反应体系中。通过对改性固体酸催化剂进行粉末衍射(XRD)、傅里叶红外光谱(FT-IR)、扫描电镜(SEM)等表征技术发现,制备得到的改性固体酸为分散的小块片状结构,比表面积得到增加。此外,考察了催化剂用量、油酸与甲醇物质的量之比、反应温度及时间等因素对油酸转化率的影响。数据显示:在催化剂用量0.25 g、油酸与甲醇物质的量之比1∶10、反应温度70℃、反应时间3 h的条件下,油酸转化率为65.6%,且该催化剂适用于其它一些游离脂肪酸酯化及非粮油料预酯化反应。
[Abstract]:The modified p-toluenesulfonic acid-montmorillonite solid acid catalyst was prepared by impregnation method and was applied to the esterification of oleic acid with methanol to prepare methyl oleate. The modified solid acid catalyst was characterized by powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). In addition, the effects of the amount of catalyst, the ratio of oleic acid to methanol, the reaction temperature and time on the conversion of oleic acid were investigated. The results show that under the conditions of catalyst dosage 0.25 g, ratio of oleic acid to methanol 1: 10, reaction temperature 70 鈩，
本文编号：2287619
[Abstract]:The modified p-toluenesulfonic acid-montmorillonite solid acid catalyst was prepared by impregnation method and was applied to the esterification of oleic acid with methanol to prepare methyl oleate. The modified solid acid catalyst was characterized by powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). In addition, the effects of the amount of catalyst, the ratio of oleic acid to methanol, the reaction temperature and time on the conversion of oleic acid were investigated. The results show that under the conditions of catalyst dosage 0.25 g, ratio of oleic acid to methanol 1: 10, reaction temperature 70 鈩，
本文编号：2287619
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