A Highly Efficient Heterogeneous Catalyst of Bimetal-Organic Frameworks for the Epoxidation of Olefin with H<sub>2</sub>O<sub>2</sub>
oleh: Fei Wang, Xiang-Guang Meng, Yan-Yan Wu, Hong Huang, Jing Lv, Wen-Wang Yu
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2020-05-01 |
Deskripsi
A series of bimetel organic framework Mn<sub>x</sub>Cu<sub>1−x</sub>-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 H<sub>2</sub>O<sub>2</sub> as oxidant. The MOFs catalyst exhibits excellent catalytic activity for the epoxidations of various aromatic and cyclic olefins. Particularly, Mn<sub>0.1</sub>Cu<sub>0.9</sub>-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 H<sub>2</sub>O<sub>2</sub> and inhibit its decomposition to a certain extent. The catalyst can be reused at least five cycles without significant loss in activity towards epoxidation.