Mg-MOF-74在Knoevenagel缩合反应中的催化性能研究

doi:10.19964/j.issn.1006-4990.2021-0326

Abstract

Abstract:

Under solvothermal conditions,Mg-MOF-74 was synthesized by magnesium acetate and 2,5-dihydroxyterephth-alic acid.Through elemental analysis,scanning electron microscopy,X-ray diffraction spectroscopy,infrared spectroscopy and thermogravimetry,the structure and properties of them were analyzed and determined.The incorporation of alkaline earth metals and phenoxy structural ligand was an effective way to increase the basicity of MOFs.To explore catalytic activity of Mg-MOF-74,it was applied to catalyze the Knoevenagel condensation of benzaldehyde with ethyl cyanoacetate to produce ethyl（E）-α-cyanocinnamate.The conversion rate could be improved by changing the reaction time,solvent type,substrate concentration,amount of catalyst,stirring rate and reaction temperature.Under milder conditions,the conversion rate of the reaction was 94.5% and the selectivity was greater than 99.5% for the Mg-MOF-74.The Mg-MOF-74 could be easily separated from the solution with good heterogeneity and it was used 5 runs without significant loss of catalytic efficiency.

Key words: Knoevenagel condensation reaction, heterogeneous catalysis, Mg-MOF-74, 2,5-dihydroxyterephthalic acid

CLC Number:

TQ132.2

SONG Xiuduo,CAI Zhe,LI Xiaoyun,SUN Yanyin,HAN Enshan. Study on catalytic performance of Mg-MOF-74 in the Knoevenagel condensation reaction[J]. Inorganic Chemicals Industry, 2022, 54(2): 111-116.

Figures/Tables 11

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Study on catalytic performance of Mg-MOF-74 in the Knoevenagel condensation reaction

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