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使用金属有机框架封装的锆掺杂多金属氧酸盐纳米杂化物从油酸高效生产生物柴油。

Efficient biodiesel production from oleic acid using metal-organic framework encapsulated Zr-doped polyoxometalate nano-hybrids.

作者信息

Zhang Qiuyun, Lei Dandan, Luo Qizhi, Wang Jialu, Deng Taoli, Zhang Yutao, Ma Peihua

机构信息

School of Chemistry and Chemical Engineering, Anshun University Anshun 561000 Guizhou China

Engineering Technology Center of Control and Remediation of Soil Contamination of Provincial Science & Technology Bureau, Anshun University Anshun 561000 Guizhou China

出版信息

RSC Adv. 2020 Feb 28;10(15):8766-8772. doi: 10.1039/d0ra00141d. eCollection 2020 Feb 27.

DOI:10.1039/d0ra00141d
PMID:35496537
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9049981/
Abstract

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-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.

摘要

根据可持续发展的需求，固体催化剂是绿色生物柴油生产的关键材料。在本研究中，采用水热法制备了可重复使用且高活性的Fe-BTC和UiO-66金属有机框架封装Zr掺杂多金属氧酸盐纳米杂化催化剂（ZrSiW/Fe-BTC和ZrSiW/UiO-66），用于油酸与甲醇的酸催化酯化反应。使用傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、氮吸附-脱附、扫描电子显微镜（SEM）、热重（TG）和程序升温脱附（NH-TPD）分析等多种技术对合成催化剂的结构和组成进行了表征。所制备的ZrSiW/UiO-66在油酸与甲醇的酯化反应中具有优异的催化活性，高于ZrSiW/Fe-BTC催化剂，这是因为ZrSiW/UiO-66纳米杂化物具有高酸度、大比表面积和孔体积以及相对较大的平均孔径。此外，还评估了纳米杂化物的可重复使用性和稳定性，发现ZrSiW/UiO-66催化剂的稳定性更好。

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