A kind of highly dispersed nanometer metal oxide composite carbon material and its preparation method and application
A nano-metal and oxide technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of poor stability, low dispersion, and metal particles Large and other problems, to achieve the effect of strong sustainability, wide range of sources, and simple preparation methods
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Embodiment 1
[0029] The raw materials of this embodiment are carboxymethyl cellulose, F127, cerium nitrate and nitric acid.
[0030] The specific preparation process is:
[0031] Weigh 1g of carboxymethyl cellulose and dissolve it in 50ml of water, and add 1g of F127 and stir evenly; then add 1g of cerium nitrate and 1ml of nitric acid, mix well, and stir until dry; then, transfer to a 30ml crucible and calcine in a nitrogen furnace. The specific calcining process is: heating up to 1000°C at 10°C / min, calcining at 1000°C for 2h; finally, naturally cooling to room temperature, grinding the calcined mixture to obtain carbon material.
[0032] figure 1 It is a transmission electron microscope image (TEM) of the highly dispersed nano-metal oxide composite carbon material prepared in this embodiment. From figure 1 It can be seen that in the high-dispersion nano-metal oxide composite carbon material, CeO 2 The particle size is very small, the average particle size is 7nm, and the dispersion is very un...
Embodiment 2
[0035] The raw materials of this embodiment are carboxymethyl cellulose, F127, zirconium nitrate and nitric acid.
[0036] The specific preparation process is:
[0037] Weigh 1g of carboxymethyl cellulose, dissolve in 50ml of water, and add 1g of F127 and stir evenly. Then add 1g of zirconium nitrate and 1ml of nitric acid to mix uniformly, stir until dry; then, transfer to a 30ml crucible, calcined in a nitrogen furnace, the specific calcining process is: heating up at 10°C / min to 1000°C, calcining at 1000°C 2h; then, naturally cool down to room temperature. Grind the calcined mixture to obtain a carbon material.
Embodiment 3
[0039] The raw materials of this embodiment are carboxymethyl cellulose, P123, indium nitrate and nitric acid.
[0040] The specific preparation process is:
[0041] Weigh 1g of carboxymethyl cellulose, dissolve in 50ml of water, and add 1g of F127 and stir evenly. Then add 1g of indium nitrate and 1ml of nitric acid to mix uniformly, stir until dry; then, transfer to a 30ml crucible, and calcinate in a nitrogen furnace. The specific calcining process is: heating up at 10°C / min to 1000°C and calcining at 1000°C 2h; then, naturally cool down to room temperature. Grind the calcined mixture to obtain a carbon material.
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