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首页> 外文期刊>RSC Advances >Efficient biodiesel production from oleic acid using metal–organic framework encapsulated Zr-doped polyoxometalate nano-hybrids
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Efficient biodiesel production from oleic acid using metal–organic framework encapsulated Zr-doped polyoxometalate nano-hybrids

机译：使用金属 - 有机骨架包封Zr掺杂多氧酸盐纳米杂种的高效生物柴油生产

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摘要

According to the need of sustainable development, solid catalysts are critical materials for green biodiesel production. In this study, a hydrothermal method was used to develop a reusable and highly active Fe-BTC and UiO-66 metal–organic framework encapsulated Zr-doped polyoxometalate nano-hybrid catalysts (ZrSiW/Fe-BTC and ZrSiW/UiO-66) for the acid-catalyzed esterification of oleic acid with methanol. The structural and compositional characterization of the synthesized catalysts were characterized using various techniques such as Fourier transform infrared spectrometry (FT-IR), X-ray diffraction (XRD), nitrogen adsorption–desorption, scanning electron microscopy (SEM), and thermogravimetric (TG) and temperature programmed desorption (NH _(3) -TPD) analysis. The as-prepared ZrSiW/UiO-66 had excellent catalytic activity in the esterification of oleic acid with methanol, higher than that of ZrSiW/Fe-BTC catalyst, owing to the fact that ZrSiW/UiO-66 nano-hybrids have high acidity, large specific surface area and pore volumes, and relatively large average pore sizes. Furthermore, the reusability and stability of nano-hybrids were also evaluated, and it was found that the stability of ZrSiW/UiO-66 catalyst was better.
机译：根据可持续发展的需要，固体催化剂是绿生生物柴油生产的关键材料。在该研究中，使用水热法来开发可重复使用和高活性的Fe-BTC和UIO-66金属 - 有机骨架包封的Zr掺杂的多氧酸盐纳米杂交催化剂（Zrsiw / Fe-BTC和Zrsiw / UIO-66）用甲醇酸催化的油酸酯化。合成催化剂的结构和组成表征使用诸如傅里叶变换红外光谱（FT-IR），X射线衍射（XRD），氮吸附 - 解吸，扫描电子显微镜（SEM）和热重度（TG ）温度编程解吸（NH _（3）-TPD）分析。由于Zrsiw / UIO-66纳米杂种具有高酸度的事实，所制备的ZrSIW / UIO-66在甲醇的酯化中具有优异的催化活性，高于甲醇，高于Zrsiw / Fe-BTC催化剂的催化活性。大的比表面积和孔隙体积，平均孔径相对较大。此外，还评估了纳米杂交种的可重用性和稳定性，发现Zrsiw / UIO-66催化剂的稳定性更好。

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