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首页> 外文期刊>RSC Advances >A novel solid acid catalyst synthesized from ZnAl2O4 spinel and its application in the esterification of acetic acid and n-butyl alcohol
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A novel solid acid catalyst synthesized from ZnAl2O4 spinel and its application in the esterification of acetic acid and n-butyl alcohol

机译：ZnAl2O4尖晶石合成的新型固体酸催化剂及其在乙酸与正丁醇酯化中的应用

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A new spinel-style S2O82-/ZnAl2O4 solid acid catalyst was prepared by sol-gel method. The catalytic performance was evaluated by the esterification of n-butyl acetate. The structure, morphology and acidity of the samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Field emission scanning electron microscopy (FE-SEM), N-2 physisorption, X-ray photoelectron spectroscopy (XPS) and NH3 temperature programmed desorption (NH3-TPD). The results showed that the catalytic performances were significantly affected by the calcination temperature. S2O82-/ZnAl2O4-600 exhibited the highest catalytic activity of 91.7% under the optimum reaction conditions. The characterization showed that the mesoporous structure S2O82-/ZnAl2O4-600 maintained the well crystallinity of spinel as well as the spinel-style carrier in the sulfidation and recycling.
机译：通过溶胶-凝胶法制备了一种新型的尖晶石型S2O82- / ZnAl2O4固体酸催化剂。通过乙酸正丁酯的酯化评估催化性能。通过X射线衍射（XRD），傅立叶变换红外光谱（FT-IR），场发射扫描电子显微镜（FE-SEM），N-2物理吸附，X射线光电子对样品的结构，形貌和酸度进行表征。光谱（XPS）和NH3程序升温脱附（NH3-TPD）。结果表明，煅烧温度对催化剂的催化性能有显着影响。在最佳反应条件下，S2O82- / ZnAl2O4-600的最高催化活性为91.7％。表征表明，介孔结构S2O82- / ZnAl2O4-600在硫化和循环利用过程中保持了尖晶石以及尖晶石型载体的良好结晶性。

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