A kind of porous composite material for catalytic synthesis of propylene carbonate and preparation method thereof
A porous composite material, propylene carbonate technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the discount of Schiff base catalytic efficiency, catalyst preparation Complex steps, harsh reaction conditions, etc., to achieve outstanding catalytic effect, increase active contact area, and improve catalytic activity.
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Embodiment 1
[0031] Example 1 Preparation of Salen(Ni)@UiO-66 porous composite material
[0032](1) Measure 20.42 mL of DMF into a 50 mL beaker, first add 46.7 mg (0.2 mmol) of ZrCl 4 and 36.3 mg (0.2 mmol) of 2-aminoterephthalic acid, sonicate until completely clear, then add 4.58 mL (0.08 mol) of glacial acetic acid to the above clear solution and stir for 10 min, then transfer it to a 50 mL polytetrafluoroethylene A stainless steel reaction kettle lined with vinyl fluoride, and crystallized at 120 °C for 12 h, the resulting product was washed by centrifugation and then vacuum-dried at 80 °C for 24 h to obtain a light yellow powder, which was then vacuum activated at 150 °C 2 h, finally get NH 2 -UiO-66;
[0033] (2) Add 100 mg (0.16 mmol) of the NH obtained in step (1) to a 50 mL round bottom flask 2 -UiO-66 and 49.6 mg (0.20 mmol) of nickel acetate, add 35 mL of absolute ethanol as a dispersant, ultrasonically until the solid is completely dispersed, then quickly add 2.85 mL (0.28 m...
Embodiment 2
[0034] Example 2 Preparation of Salen(Mo)@UiO-66 porous composite material
[0035] (1) Measure 40.84 mL DMF into a 50 mL beaker, first add 93.4 mg (0.4 mmol) ZrCl 4 and 72.6 mg (0.2 mmol) of 2-aminoterephthalic acid, sonicate until completely clear, then add 9.16 mL (0.16 mol) of glacial acetic acid to the above clear solution and stir for 10 minutes, then transfer it to a 50 mL polytetrafluoroethylene A stainless steel reaction kettle lined with vinyl fluoride, and crystallized at 140 °C for 24 h, the resulting product was washed by centrifugation and then vacuum-dried at 80 °C for 24 h to obtain a light yellow powder, and then the obtained light yellow powder was vacuum activated at 150 °C 2 h, finally get NH 2 -UiO-66;
[0036] (2) Add 100 mg (0.16 mmol) of the NH obtained in step (1) to a 50 mL round bottom flask 2 -UiO-66 and 65.2 mg (0.20 mmol) of molybdenum acetylacetonate, add 35 mL of absolute ethanol as a dispersant, ultrasonically until the solid is completely d...
Embodiment 3
[0037] Example 3 Preparation of Salen(Co)@UiO-66 porous composite material
[0038] (1) Measure 30.63 mL DMF into a 50 mL beaker, first add 46.7 mg (0.2 mmol) ZrCl 4 and 45.875 mg (0.25 mmol) of 2-aminoterephthalic acid, sonicate until completely clear, then add 6.87 mL (0.12 mol) of glacial acetic acid to the above clear solution and stir for 10 min, then transfer it to a 50 mL polytetrafluoroethylene Fluoride vinyl-lined stainless steel reaction kettle, and crystallized at 130 °C for 12 h, the resulting product was washed by centrifugation and then vacuum-dried at 80 °C for 24 h to obtain a light yellow powder, and then the obtained light yellow powder was vacuum activated at 150 °C 2 h, finally get NH 2 -UiO-66;
[0039] (2) Add 100 mg (0.16 mmol) of the NH obtained in step (1) to a 50 mL round bottom flask 2 -UiO-66 and 35.4 mg (0.20 mmol) cobalt acetate, add 35 mL of absolute ethanol as a dispersant, ultrasonically until the solid is completely dispersed, then quickly ...
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