碱性条件下Cu-BTC液相催化氧化甘油的性能研究

Catalytic Oxidation Performance Research of Glycerol by Cu-BTC in Basic Liquid Phase

此文介绍一种MOFs催化材料Cu-BTC用于碱性介质下液相催化氧化甘油的研究。运用X射线衍射、氮气吸附-脱附和扫描电子显微镜等进行表征,并对反应的影响因素进行探究。结果表明:催化剂Cu-BTC比表面积大,热稳定性好,微观上晶型近似正八面体结构,孔道不均匀。反应温度和投入的NaOH质量对反应体系影响最大,投入的NHPI能有效地调节产物的选择性。在优化的反应条件下,甘油的转化率可达到33.76%,甘油酸的最高选择性可达51.37%,表明此类MOFs材料能运用于甘油的催化氧化。

A kind of typical MOFs material named Cu-BTC is synthesized successfully,and then used for oxidation research of glycerol in basic liquid phase.The catalyst is characterized by X-ray diffraction,Fourier transform infrared spectroscopy,nitrogen adsorption-desorption and scanning electron microscopy,and applied to the affect factors research of oxidation of glycerol.The results show that the specific surface area of Cu-BTC catalyst is big;thermal stability is good;micro crystal is nearly as octahedron;apertures are not uniform.The reaction temperature and the mass of NaOH are the key factors to influence this oxidate reation,and the selectivity of products can also be adjusted by the addition of NHPI.Under the optimized condition,the conversion rate of glycerol can reach 33.76%,and the selectivity of glyceric acid can reach 51.37%.This finding indicates this kind of MOFs material can be applied for the catalytic oxidation of glycerol.