Key Laboratory of Green Chemistry and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China.
Molecules. 2020 May 21;25(10):2389. doi: 10.3390/molecules25102389.
A series of bimetel organic framework MnCu-MOF were prepared. The MOFs was characterized and analyzed by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The catalytic activity of the developed catalyst was tested on various olefins by HO as oxidant. The MOFs catalyst exhibits excellent catalytic activity for the epoxidations of various aromatic and cyclic olefins. Particularly, MnCu-MOF can achieve 90.2% conversion of styrene with 94.3% selectivity of styrene oxide at 0 °C after reaction 6 h. The MOF exhibited the catalytic activity of inverse temperature effect on epoxidation of styrene. The introduction of copper component can stabilize HO and inhibit its decomposition to a certain extent. The catalyst can be reused at least five cycles without significant loss in activity towards epoxidation.
一系列双金属有机框架 MnCu-MOF 被制备。通过粉末 X 射线衍射（PXRD）、X 射线光电子能谱（XPS）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对 MOF 进行了表征和分析。以 HO 作为氧化剂，在各种烯烃上测试了所开发催化剂的催化活性。该 MOFs 催化剂对各种芳香族和环状烯烃的环氧化反应表现出优异的催化活性。特别是，MnCu-MOF 在反应 6 小时后，在 0°C 下可以达到 90.2%的苯乙烯转化率和 94.3%的苯乙烯氧化物选择性。该 MOF 对苯乙烯环氧化表现出逆温度效应的催化活性。铜组分的引入可以在一定程度上稳定 HO 并抑制其分解。该催化剂在至少五个循环的环氧化反应中可以重复使用，活性没有明显损失。
