Zhao Kangyu, Xiang Yanping, Sun Xiaoao, Chen Linjiao, Xiao Jiafu, Liu Xianxiang
National and Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, China.
Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, China.
Front Chem. 2022 May 9;10:900482. doi: 10.3389/fchem.2022.900482. eCollection 2022.
In this study, a novel sulfonic acid-modified catalyst for MOFs (UIO-66-SOH) was synthesized using chlorosulfonic acid as a sulfonating reagent and first used as efficient heterogeneous catalysts for the one-pot conversion of fructose into biofuel 5-ethoxymethylfurfural (EMF) in a cosolvent free system. The physicochemical properties of this catalyst were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and powder X-ray diffraction (XRD). The characterization demonstrated that the sulfonic acid group was successfully grafted onto the MOF material and did not cause significant changes to its morphology and structure. Furthermore, the effects of catalyst acid amount, reaction temperature, reaction time, and catalyst dosage on reaction results were investigated. The results showed that the conversion of fructose was 99.7% within 1 h at 140°C, while the EMF yield reached 80.4%. This work provides a viable strategy by application of sulfonic acid-based MOFs for the efficient synthesis of potential liquid fuel EMF from renewable biomass.
在本研究中，以氯磺酸作为磺化试剂合成了一种新型的金属有机框架材料磺酸改性催化剂（UIO-66-SOH），并首次将其用作高效多相催化剂，在无共溶剂体系中一锅法将果糖转化为生物燃料5-乙氧基甲基糠醛（EMF）。通过傅里叶变换红外光谱（FT-IR）、透射电子显微镜（TEM）和粉末X射线衍射（XRD）对该催化剂的物理化学性质进行了表征。表征结果表明，磺酸基团成功接枝到金属有机框架材料上，且未对其形态和结构造成显著变化。此外，还研究了催化剂酸量、反应温度、反应时间和催化剂用量对反应结果的影响。结果表明，在140℃下反应1小时，果糖转化率为99.7%，而EMF产率达到80.4%。这项工作通过应用磺酸基金属有机框架材料，为从可再生生物质高效合成潜在液体燃料EMF提供了一种可行的策略。
