MOFs (Metal-Organic Frameworks)@noble metal@MOFs catalyst applicable to selective hydrogenation reaction, as well as preparation method and application thereof
A hydrogenation reaction and noble metal technology, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, preparation of hydroxyl compounds, etc., to achieve high selectivity
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Embodiment 1
[0050] 0.5mmol PVP and 0.1mmol H 2 PtCl 6 Dissolved in 95mL ethanol and 5mL water, after fully dissolved, the solution was heated to reflux for 3h to obtain platinum nanoparticles. The solution was evaporated to remove the solvent, re-dispersed in DMF or water, and set aside.
[0051] 3mmol FeCl 3 and 1 mmol of 2-aminoterephthalic acid were dissolved in 30 mL of DMF, and then the solution was transferred to a polytetrafluoroethylene lining, and reacted at 110 °C for 24 h under solvothermal conditions to obtain MOFs. The MOFs were centrifuged at 5000 rpm for 8 min, redispersed into 10 mL of DMF, and then Pt nanoparticles were added to the solution, stirred at room temperature for 3 h, and centrifuged at 5000 rpm for 8 min to obtain the supported catalyst MOFsPt. Then add 1mmol PVP, 0.9mmol FeCl 3 , 0.3mmol 2-aminoterephthalic acid and 10mL DMF were reacted at 110℃ for 10h under solvothermal conditions to obtain the core-shell structure MOFsPtMOFs catalyst.
[0052] Perform...
Embodiment 2
[0056] 0.5mmol PEG and 0.1mmol K 2 PtCl 6 Dissolve in 5mL of methanol and 95mL of water. After fully dissolving, the solution is heated to reflux for 24 hours to obtain platinum nanoparticles. The solution was evaporated to remove the solvent, re-dispersed in DMF or water, and set aside.
[0057] 1mmol FeCl 2 and 0.4 mmol of 2,5-dihydroxyterephthalic acid were dissolved in 30 mL of DMF-3 mL of methanol, and then the solution was transferred to a polytetrafluoroethylene liner, and reacted at 120 °C for 20 h under solvothermal conditions to obtain MOFs. The MOFs was centrifuged at 5000 rpm for 8 min, redispersed into 30 mL of DMF, and then Pt nanoparticles were added to the solution, stirred at room temperature for 3 h, and centrifuged at 5000 rpm for 8 min to obtain the supported catalyst MOFsPt. Then add 1mmol PEG, 0.3mmol Co(NO 3 ) 2 and 0.1mmol 2,5-dihydroxyterephthalic acid were dissolved in 8mL DMF-1mL methanol, and reacted for 8h under solvothermal conditions at 110°...
Embodiment 3
[0062] Mix 10mmol PVP and 0.1mmol H 2 PtCl 6 Dissolve in 95mL propanol and 5mL water. After fully dissolving, the solution is heated to reflux for 3h to obtain platinum nanoparticles. The solution was evaporated to remove the solvent, re-dispersed in DMF or water, and set aside.
[0063] 1mmol Cr(NO 3 ) 3 and 1 mmol of terephthalic acid were dissolved in 10 mL of water, and then the solution was transferred to a polytetrafluoroethylene lining, and reacted at 220 °C for 10 h under solvothermal conditions to obtain MOFs. The MOFs was centrifuged at 5000 rpm for 8 min, redispersed into 10 mL of water, and then Pt nanoparticles were added to the solution, stirred at room temperature for 3 h, and centrifuged at 5000 rpm for 8 min to obtain the supported catalyst MOFsPt. Then add 1mmol PVP, 0.5mmol Cr(NO 3 ) 3 , 0.5mmol terephthalic acid and 5mL water were reacted under solvothermal conditions at 200°C for 8h to obtain the core-shell structure MOFsPtMOFs catalyst
[0064] The...
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