Pt/TiN@CN catalyst with high oxygen reduction activity and preparation method thereof, and application of Pt/TiN@CN catalyst with high oxygen reduction activity
A catalyst and active technology, applied in the field of Pt/TiN@CN catalyst with high oxygen reduction activity and its preparation, can solve the problems of deactivation, limitation, and cost, and achieve improved stability and durability, increased specific surface area, and improved The effect of mechanical strength
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034] Preparation of TiN@CN support
[0035] Put the TiN powder into a porcelain boat and place it in a tube furnace, and heat it to 800°C at 5°C / min in an argon atmosphere. Subsequently, will carry saturated CCl 4 A stream of steam argon was introduced into the tube furnace at a flow rate of 50 ml / min. After calcination at 800 °C for 2 h, the furnace was cooled with pure argon to obtain TiN@CN. Such as figure 1 It is a high temperature extraction device designed to control the CCl 4 access. Such as figure 2 As shown, the TiN@CN support is a flaky core-shell structure with a specific surface area of 313.5m 2 / g, the total pore volume is 0.49cc / g. image 3 is the isothermal adsorption-desorption curve of TiN@CN catalyst support, from image 3 It can be seen that there are a large number of micropores on the surface of the material, which increases the specific surface area of the material and is conducive to the dispersion of metal Pt, and the material has a flaky...
Embodiment 2
[0039] Put the TiN powder into a porcelain boat and place it in a tube furnace, and heat it to 900°C at 5°C / min in an argon atmosphere. Subsequently, will carry saturated CCl 4 A steamed argon flow was introduced into the furnace at a flow rate of 50 mL / min. After calcination at 900 °C for 1 h, the furnace was cooled with pure argon to obtain TiN@CN.
[0040]Disperse 0.5g of TiN@CN carrier in 65mL of ethylene glycol and ultrasonically disperse it for 20min to make it evenly dispersed; dissolve 0.26g of chloroplatinic acid hexahydrate in 5mL of ethylene glycol and mix it with the above solution; prepare 1M Sodium hydroxide solution, adjust the pH to 11.5; the solution was stirred and reacted for 3 hours at 160° C. under a nitrogen atmosphere, and after the reaction was completed, the pH was adjusted to 0.5 with 10 wt% HCl, stirred for 12 hours, and filtered and washed until the waste liquid was neutral; The washed solid powder was dried at 80°C for 12 hours, and then the abov...
Embodiment 3
[0042] Put the TiN powder into a porcelain boat and place it in a tube furnace, and heat it to 800°C at 5°C / min in an argon atmosphere. Subsequently, a stream of argon carrying saturated CCl4 vapor was introduced into the furnace at a flow rate of 60 mL / min. After calcination at 800 °C for 2 h, the furnace was cooled with pure argon to obtain TiN@CN.
[0043] Disperse 0.5g of TiN@CN carrier in 65mL of ethylene glycol and ultrasonically disperse it for 20min to make it evenly dispersed; dissolve 0.26g of chloroplatinic acid hexahydrate in 5mL of ethylene glycol and mix it with the above solution; prepare 1M Sodium hydroxide solution, adjust the pH to 11.5; the solution was stirred and reacted for 3 hours at 160° C. under a nitrogen atmosphere, and after the reaction was completed, the pH was adjusted to 0.5 with 10 wt% HCl, stirred for 12 hours, and filtered and washed until the waste liquid was neutral; The washed solid powder was dried at 80°C for 12 hours, and then the abov...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More