A kind of super amphiphilic carbon and its preparation method and application
An amphiphilic, inert atmosphere technology, used in the preparation of carbon-based compounds, carbon preparation/purification, chemical instruments and methods, etc., can solve problems such as complex processes and achieve the effect of improving the efficiency of catalytic reactions
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Embodiment 1
[0033] A preparation method of super amphiphilic carbon, comprising the following steps:
[0034] 1) Poplar is selected as the wood flour raw material, namely poplar wood powder; the ionic liquid is selected to contain bis-trifluoromethanesulfonimide anion while the cation is methylbutylimidazole.
[0035] 2) The wood flour in step 1) and the ionic liquid are mixed in a mass ratio of 6:1.
[0036] 3) The mixed mixture prepared in step 2) is placed in nitrogen and pyrolyzed at 200 ° C for 8 hours to obtain super amphiphilic carbon, and its SEM photo is as follows: figure 1 shown.
[0037] 4) The contact angles of super-amphiphilic carbon to water and oil were measured with water and dodecane, and the results were all approximately 0°, such as figure 2 shown.
[0038] 5) The super-amphiphilic carbon forms Pickering emulsion in styrene and water, and its laser confocal photos are as follows image 3 shown, the concentration of superamphiphilic carbon is 1 mg·mL -1 .
[003...
Embodiment 2
[0041] A preparation method of super amphiphilic carbon, comprising the following steps:
[0042] 1) The raw material of wood powder is oak, namely oak powder; the ionic liquid is selected to contain bis-trifluoromethanesulfonimide anion and the cation is tributylhexylphosphonium.
[0043] 2) The wood flour in step 1) and the ionic liquid are mixed according to a mass ratio of 3:1.
[0044] 3) The mixed mixture prepared in step 2) was pyrolyzed at 350° C. for 5 hours in an argon atmosphere to obtain a super-amphiphilic carbon.
[0045] 4) The super amphiphilic carbon forms Pickering emulsion in carbododecaldehyde and ethylene glycol, and its laser confocal photos are as follows Figure 5 As shown, the concentration of superamphiphilic carbon is 3 mg·mL -1 .
[0046] 5) In the above-mentioned emulsion, the conversion rate of the acetylation reaction of carbododecaldehyde is increased by 66.3% compared with not adding super amphiphilic carbon, such as Image 6 shown.
Embodiment 3
[0048] A preparation method of super amphiphilic carbon, comprising the following steps:
[0049] 1) The raw material wood powder is selected from pine in cork; the ionic liquid is selected to contain bis-trifluoromethanesulfonimide anion and the cation is tributylmethylammonium.
[0050] 2) The wood flour in step 1) and the ionic liquid are mixed in a mass ratio of 1:1.
[0051] 3) The mixed mixture prepared in step 2) is placed in helium gas and pyrolyzed at 450° C. for 2 hours to obtain super-amphiphilic carbon.
[0052] 4) The super amphiphilic carbon forms Pickering emulsion in n-octene and water, and its laser confocal photos are as follows Figure 7 shown, the concentration of superamphiphilic carbon is 5 mg mL -1 .
[0053] 5) In the above-mentioned emulsion, the epoxidation reaction of n-octene is 3 times higher than that of the target product without adding super-amphiphilic carbon, such as Figure 8 shown.
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