Phosphorus-doped porous graphene and its preparation method and method for catalyzing the oxidation of benzylamine
A technology of porous graphene and catalyst catalyzing benzylamine, applied in graphene, chemical instruments and methods, catalyst activation/preparation and other directions, can solve the problems of complicated preparation process and long period of porous graphene, and achieve stable physical and chemical properties, The effect of low cost and simple preparation process
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Embodiment 1
[0053] This embodiment provides a kind of phosphorus-doped porous graphene, which is prepared through the following steps, such as figure 1 Shown:
[0054] (1) Reflux and boil the magnesium oxide powder in water and keep it for 8 hours, cool and filter, and dry at 80°C for 12 hours, then place it in a muffle furnace and raise the temperature to 500°C at a rate of 10°C / min in an air atmosphere. ℃ roasting for 2 hours to obtain porous flake hexagonal magnesium oxide with a specific surface area of 195m 2 / g, the two-dimensional film size is about 300nm;
[0055] (2) Add 0.5g of 4,5-bisdiphenylphosphine-9,9-dimethylxanthene into 30mL of ethanol, and ultrasonically disperse for 0.5 hours, and the ultrasonic power is 80kHz to obtain Source dispersion;
[0056] (3) The porous sheet-shaped hexagonal magnesia that 0.5g step (1) obtains is joined in the dispersion liquid that contains organic carbon, phosphorus source that step (2) obtains, with the rotating speed magnetic stirrin...
Embodiment 2
[0069] This embodiment provides a kind of phosphorus-doped porous graphene, which is prepared through the following steps, such as figure 1 Shown:
[0070] (1) Reflux and boil the magnesium oxide powder in water and keep it for 8 hours, cool, filter and dry at 90°C for 10 hours, then place it in a muffle furnace and raise the temperature to 800°C at a rate of 10°C / min in an air atmosphere. ℃ roasting for 2 hours to obtain porous flake hexagonal magnesium oxide with a specific surface area of 197m 2 / g, the two-dimensional film size is about 300nm;
[0071] (2) Add 1g of 2-dicyclohexylphosphine-2',4',6'-triisopropylbiphenyl into 30mL of ethanol, ultrasonically disperse for 0.5 hours, and the ultrasonic power is 80kHz to obtain organic carbon, Dispersion of phosphorus source;
[0072] (3) The porous sheet-shaped hexagonal magnesia that 0.5g step (1) obtains is joined in the dispersion liquid that contains organic carbon, phosphorus source that step (2) obtains, with the rot...
Embodiment 3
[0084] This embodiment provides a kind of phosphorus-doped porous graphene, which is prepared through the following steps, such as figure 1 Shown:
[0085] (1) Boil the magnesium oxide powder in water for reflux and keep it for 10 hours, cool and filter it, then dry it at 80°C for 10 hours, then place it in a muffle furnace and raise the temperature to 300°C at a rate of 10°C / min in an air atmosphere. ℃ roasting for 2 hours to obtain porous flake hexagonal magnesium oxide with a specific surface area of 190m 2 / g, the two-dimensional film size is about 200nm;
[0086] (2) Add 2g of triphenylphosphine into 30mL of ethanol, ultrasonically disperse for 0.5 hours, and the ultrasonic power is 80kHz, to obtain a dispersion containing organic carbon and phosphorus sources;
[0087] (3) The porous flaky hexagonal magnesia that 0.5g step (1) obtains is joined in the dispersion liquid that contains organic carbon, phosphorus source that step (2) obtains, with the rotating speed magn...
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