Preparation, Post-modification synthesis, characterization and eva‎luation of the catalytic properties of the modified MIL-101(Cr) metal-organic Framework

12/20/2023 12:00:00 AM

Chromium-based metal-organic frameworks is widely used as a catalyst in many industrial catalytic applications. In this study, synthesis and characterization of 7 catalysts includes MIL101(Cr)-ED-Glu-Mo, MIL-101(Cr)-ED-Glu-Mo (activated), MIL-101(Cr)-ED-Mo, MIL101(Cr)-DA-Mo, MIL-101(Cr)-ED-Mo (activated) , MIL-101(Cr)-DA-Mo(activated), and MIL-101(Cr)-DA-Glu-Mo and MIL-101-Cr-ED-Glu-Mn were studied. First, Chromium-based metal-organic framework synthesized and then Ethylene diamine and 1,4-diamino-butane were placed on the catalytic, and for one group of material in the next step, the desired functional groups were cross-linked by glutaraldehyde, and finally, Molybdenum and Manganese nanoparticles were entagled on Catalytic substrate. This complexes were characterized using FT-IR (Fourier transform infrared), XRD (X-ray diffraction), and BET (Brunauer Emmett Teller), SEM (Scanning electron microscopy), TGA (Thermogravimetric) and ICP-MS (Inductively coupled plasma mass spectrometry) analysis. Then, synthesized catalysts were used in epoxidation of olefins reaction. Among these seven catalysts two of them; MIL-101(Cr)- DA-Mo, MIL-101(Cr)-ED-Mo showed the highest yields of 96.1 and 84.6 percent, respectively. These two catalyst also reused for five times without loosing their catalyst properties. In conclusion; Short reaction time, high yield, and easy reusability are the advantages of using these catalysts in epoxidation reactions.

چارچوب فلز-الي كروم , اتيلن دي آمين , دي آمينو بوتان , اپوكسايش اولفين ها , جفت شدن كربن-كربن

Chromium metal organic framework , ethylene diamine , diamino butane , Olefin epoxidation , C-C coupling

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