Tungsten carbide/porous carbon composite material and preparation method thereof and application of tungsten carbide/porous carbon composite material in electrochemical hydrogen production
A composite material, tungsten carbide technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of decreased catalytic activity, weak force, easy aggregation of catalysts, etc. Purity, increased stability, enhanced hydrogen production efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0067] According to the ratio of zinc to tungsten molar ratio of 4:1 (total 1 millimoles), weigh zinc acetate and tungstic acid and dissolve them in 4ml N,N-dimethylformamide solution; add 0.096g dimethylimidazole, ultrasonic After it is uniformly dissolved, pour the mixed solution into a 25ml polytetrafluoroethylene reactor, put it in an oven, and keep it at 160 degrees Celsius for 48 hours. When the reactor is naturally cooled to room temperature, there is a light yellow color at the bottom of the reactor. The precipitate is separated out and washed with ethanol by centrifugation for several times until the obtained supernatant becomes colorless and transparent, and the light yellow precipitate is dried to obtain the roasting precursor. Weigh an appropriate amount of the firing precursor and place it in the firing crucible, and place the crucible in the tube furnace. The tube furnace was evacuated into a vacuum with a pump, and high-purity argon gas was introduced. The temper...
Embodiment 2
[0076] Weigh zinc nitrate and phosphotungstic acid according to the molar ratio of zinc and tungsten at 4:1 (1 mmol in total), and dissolve them in 2 ml of N,N-dimethylformamide, 1 ml of ethylene glycol and 1 One milliliter of ethanol constitutes the mixed solution, add another 0.064 g of dimethylimidazole, ultrasonically wait for it to dissolve uniformly, put the above mixed solution in an oven at 120 degrees Celsius and keep it for 72 hours, and then let it cool to room temperature naturally, at the bottom of the reaction flask A light yellow precipitate was precipitated and washed with ethanol for multiple centrifugation until the obtained supernatant became colorless and transparent, and the light yellow precipitate was dried to obtain a roasting precursor. Weigh an appropriate amount of the baking precursor and place it in the baking crucible, and place the crucible in the tube furnace. The tube furnace is evacuated with a pump, and high-purity nitrogen is introduced, and t...
Embodiment 3
[0078] Weigh zinc nitrate and phosphotungstic acid according to the molar ratio of zinc and tungsten at 4:1 (1 mmol in total), and dissolve them in a mixed solution consisting of 2 ml of ethylene glycol and 1 ml of ethanol, and add another 0.064 g Dimethylimidazole, ultrasonically wait for it to dissolve uniformly, put the above mixed solution in an oven at 120 degrees Celsius and keep it for 72 hours, then let it cool to room temperature naturally, a light yellow precipitate precipitates out at the bottom of the reaction flask, and it is washed with ethanol several times by centrifugation. Until the obtained supernatant becomes colorless and transparent, and the light yellow precipitate is dried to obtain a calcined precursor. Weigh an appropriate amount of the baking precursor and place it in the baking crucible, and place the crucible in the tube furnace. The tube furnace is evacuated with a pump, and high-purity nitrogen is introduced, and the temperature is increased by 2℃ / ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Specific surface area | aaaaa | aaaaa |
| Pore volume | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More