A kind of preparation method for carbon nanotube alkali metal catalyst
A carbon nanotube and catalyst technology is applied in the field of preparation of alkali metal catalysts, which can solve the problems of environmental pollution and production costs of catalysts, and achieve the effects of reducing the preparation cost, the method is simple and feasible, and the source is cheap.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0026] The specific embodiment of the present invention is divided into the preparation of the catalyst and the application of the catalyst in the preparation of carbon nanotubes, and the embodiments are as follows.
[0027] A preparation of a catalyst for synthesizing carbon nanotubes using coal gas as a raw material. Firstly, an alkali solution is prepared, and then the catalyst carrier is impregnated in the alkali solution, stirred and impregnated in a stirrer for 4-24 hours, and the solid residue is placed in the Dry in an oven at 100-105°C for 6-15 hours, and finally bake the catalyst at 200-600°C for 3-5 hours to obtain a catalyst for the synthesis of carbon nanotubes; the alkaline solution is 10-80% KOH or NaOH solution, wherein the solvent is a mixture of water and alcohol, the ratio of water and alcohol is 1:1-9 and the alcohol is a mixture of methanol, ethanol, methanol and ethanol; the carrier is silicon dioxide Si O 2 , Al 2 O 3 , calcium oxide CaO and a mixtur...
specific Embodiment 1
[0029] Weigh 2.0g of potassium hydroxide solid, 6.1g of water, 6.3g of methanol, and 6.0g of ethanol, dissolve them in a beaker, and configure them into a 10% potassium hydroxide solution; then weigh 5.3g of silicon dioxide solid particles and add them to potassium hydroxide In the solution, put it on a magnetic stirrer to stir and impregnate for 6 hours, then filter and place the solid residue in an oven at a temperature of 100°C to dry for 12 hours, and finally roast the catalyst at 300°C for 3 hours, and the obtained product is used for the synthesis of carbon nanotubes catalyst; Weigh 3.0g of the catalyst and lay it flat in a quartz boat, place the quartz boat in the middle of the quartz tube, feed nitrogen at a flow rate of 30mL / min as a protective gas, and raise the temperature at a rate of 6°C / min so that the temperature of the reactor After reaching 300°C, feed gas at a flow rate of 20mL / min, and keep the temperature at this temperature for 0.6h; continue to raise the tem...
specific Embodiment 2
[0031] Weigh 6.1g of solid sodium hydroxide, 10.1g of ethanol, and 4.0g of water, dissolve them in a beaker, and configure a 30% sodium hydroxide solution; then weigh 5.0g of activated alumina solid particles, and add them to the sodium hydroxide solution. Put it on a magnetic stirrer to stir and impregnate for 10 hours, then filter and place the solid residue in an oven at 100°C to dry for 12 hours, and finally bake the catalyst at 350°C for 3.5 hours, and the catalyst for the synthesis of carbon nanotubes is obtained Take 3.1g of the catalyst and lay it flat in a quartz boat, put the quartz boat in the middle of the quartz tube, feed argon with a flow rate of 60mL / min as a protective gas, and the temperature increase rate is 8°C / min so that the temperature of the reactor reaches 350°C, then feed gas at a flow rate of 60mL / min, keep the temperature at this temperature for 0.7h, continue to raise the temperature of the reactor to 900°C at a rate of 8°C / min, keep the temperature...
PUM
| Property | Measurement | Unit |
|---|---|---|
| tensile strength | aaaaa | aaaaa |
| quality score | aaaaa | aaaaa |
| elongation at break | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More