A kind of preparation method of carbon nanotube
A technology of carbon nanotubes and carbon sources, applied in the direction of carbon nanotubes, nanocarbon, nanotechnology, etc., can solve the problems of low yield, restricting the production cost of medium-diameter carbon nanotubes, slow production rate, etc., and achieve high yield High, good uniformity, increase the effect of reactivity
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Embodiment 1
[0027] Catalyst preparation method:
[0028] Weigh 50g Mn(NO 3 ) 2 4H 2 O, 5g Cu(NO 3 ) 2 ·3H 2 O, 30g Zr(NO 3 ) 4 ·5H 2 O, 40g Al(NO 3 ) 3 9H 2 O and 200g of urea were added to 300g of pure water, heated at 90°C for 8h, and then filtered to obtain a precipitate. 2 Under the atmosphere of using plasma rapid heating method, the temperature is controlled at 500 ℃, calcined for 15min, after grinding, passing through 80 mesh sieve, the powdery catalyst is obtained.
[0029] Preparation method of carbon nanotubes:
[0030] (1) Mix methanol and acetone at a mass ratio of 1:1, and use low-pressure atomization and plasma treatment as a carbon source; low-pressure atomization and plasma treatment of methanol and acetone can promote the decomposition of methanol and acetone into active substances, release more active points.
[0031] (2) In a quartz tube furnace, weigh 1g of catalyst and place it on a silicon wafer, and then feed helium gas at a flow rate of 100mL / min, and...
Embodiment 2
[0035] Catalyst preparation method:
[0036] Weigh 55g Mn(NO 3 ) 2 4H 2 O, 30g Zr(NO 3 ) 4 ·5H 2 O, 40g Al(NO 3 ) 3 9H 2 O and 200g of urea were added to 300g of pure water, heated and reacted at 90°C for 6h, and then filtered to obtain a precipitate. 2 Under the atmosphere of using plasma rapid heating method, the temperature is controlled at 500 ℃, calcined for 15min, after grinding, passing through 80 mesh sieve, the powdery catalyst is obtained.
[0037] Preparation method of carbon nanotubes:
[0038] (1) Methanol and acetone are mixed according to a mass ratio of 0.5:1, and used as a carbon source after low-pressure atomization and plasma treatment;
[0039] (2) if figure 1 As shown, in a quartz tube furnace, weigh 1 g of catalyst and place it on a silicon wafer, and then inject helium gas at a flow rate of 100 mL / min, and pass an electric current through the silicon wafer to heat the part of the silicon wafer occupied by the catalyst. Control the temperature...
Embodiment 3
[0042] Catalyst preparation method:
[0043] Weigh 50g Co(NO 3 ) 2 ·6H2 O, 5g Cu(NO 3 ) 2 ·3H 2 O, 30g Zr(NO 3 ) 4 ·5H 2 O, 40g Al(NO 3 ) 3 9H 2 O and 200g of urea were added to 300g of pure water, heated at 90°C for 4h, and then filtered to obtain a precipitate. 2 Under the atmosphere of using plasma rapid heating method, the temperature is controlled at 500 ℃, calcined for 15min, after grinding, passing through 80 mesh sieve, the powdery catalyst is obtained.
[0044] Preparation method of carbon nanotubes:
[0045] (1) Methanol and acetone are mixed according to a mass ratio of 0.5:1, and used as a carbon source after low-pressure atomization and plasma treatment;
[0046] (2) if figure 1 As shown, in a quartz tube furnace, weigh 1g of catalyst and place it on a silicon wafer, and then inject helium gas at a flow rate of 100mL / min, and pass current through the silicon wafer to locally heat the silicon wafer occupied by the catalyst. Control the temperature in ...
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