微波辅助合成法制备金属有机骨架材料MOF-5的研究

发布时间：2018-06-11 15:40

本文选题：金属有机骨架 + MOF-　；参考：《现代化工》2017年03期

【摘要】：以六水合硝酸锌和对苯二甲酸为原料,N,N-二甲基甲酰胺(DMF)为溶剂,通过微波辅助合成的方法制备了金属有机骨架MOF-5晶体。采用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、热失重(TG)和扫描电子显微镜(SEM)等对晶体的表面形貌、晶体结构及热稳定性等进行了表征。结果佳合成工艺条件:反应温度为130℃,反应时间为60 min,微波辐射功率为100 W,此时合成的MOF-5晶体为规则的立方体结构,粒径均匀,大小约在20~40μm。反应温度升高或降低均不利于合成规则形态的晶体;反应时间太短,晶体产率太低,延长反应时间对晶体的结构与性能影响不大,但会使产率提高;微波辐射功率对晶体的表面形貌、结构和性能有较大影响。
[Abstract]:The metal organic framework MOF-5 crystals were prepared by microwave assisted synthesis of six hydrated zinc nitrate and terephthalic acid, N, N- two methyl formamide (DMF). The surface morphology and crystal structure of the crystals were made by X ray diffraction (XRD), Fu Liye transform infrared spectroscopy (FTIR), thermal weight loss (TG) and scanning electron microscope (SEM). The optimum synthesis conditions are as follows: the reaction temperature is 130 C, the reaction time is 60 min, the microwave radiation power is 100 W, the synthesized MOF-5 crystal is the regular cube structure, the particle size is uniform and the size of the reaction temperature rises or decreases at 20~40 mu m., and the reaction time is not good for the synthesis of the regular form. It is too short, the yield of crystal is too low, and the effect of prolonging the reaction time on the structure and properties of the crystal is little, but the yield will be increased, and the microwave radiation power has a great influence on the surface morphology, structure and properties of the crystal.
【作者单位】：太原工业学院材料工程系;太原工业学院机械工程系;
【基金】：山西省高校科技研究开发项目(20121030) 山西省回国留学人员科研资助项目(2012-107) 山西省重点扶持学科建设经费资助
【分类号】：O627

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