Activated carbon as well as preparation method and application thereof
An activated carbon and activated carbon adsorption technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve problems such as very high requirements for equipment materials, high cost of LNG technology, and complex storage tank design. , to achieve the effect of resource utilization, high methane adsorption capacity and suitable specific surface area
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Examples
Embodiment 1
[0031] Grind the petroleum coke, potassium hydroxide, and nickel nitrate to a particle size of 20-300 mesh and mix evenly according to the mass ratio of 1:3:0.05. Activate in a nitrogen atmosphere at 900°C for 60 minutes, and cool down to 600°C in a nitrogen atmosphere. Stop feeding nitrogen, change to feeding methane / nitrogen mixed gas (volume ratio of methane and nitrogen: 2:10), keep warm at 600°C for 60 minutes, after cooling to room temperature, the activated product is filtered and washed with water until the pH of the filtrate is neutral, and then in the filter cake Add 10wt% dilute hydrochloric acid, wash at 60°C for 180min, filter and separate the product and continue to wash with water until the pH of the filtrate is neutral, and dry the solid product at 120°C for 5h to obtain activated carbon AC-1. The accessibility A of AC-1 is 2.0, and the specific surface area is 1937m 2 / g, 3.5MPa, 25 °C methane adsorption capacity is 236ml / (g, STP).
Embodiment 2
[0033] Grind the petroleum coke, potassium hydroxide, and cobalt nitrate to a particle size of 20-300 mesh and mix evenly according to the mass ratio of 1:4:0.1, and pass through the acetylene / nitrogen gas mixture (the volume ratio of acetylene and nitrogen is 1:5), Keep warm at 700°C for 30 minutes, stop feeding acetylene / nitrogen mixed gas, change to nitrogen, continue to heat up to 850°C, and keep warm for 30 minutes. After cooling to room temperature, the activated product was filtered and washed with water until the pH value of the filtrate was neutral, then 20 wt% of dilute sulfuric acid was added to the filter cake, and washed at 50°C for 240 minutes, and the product was further washed with water after separation by filtration until the pH value of the filtrate was neutral, and the solid product Activated carbon AC-2 was obtained by drying at 100°C for 12 h. The accessibility A of AC-2 is 1.9, and the specific surface area is 1843m 2 / g, 3.5MPa, 25°C methane adsorption...
Embodiment 3
[0035] Grind petroleum coke, potassium hydroxide, and ferric oxide to a particle size of 20-300 mesh and mix evenly in a mass ratio of 1:7:0.2, activate at 950°C for 60 minutes in a nitrogen atmosphere, and cool down to 800°C in a nitrogen atmosphere ℃, stop feeding nitrogen, change to methane / nitrogen mixed gas (methane and nitrogen volume ratio 1:8), keep warm at 800°C for 30min, then cool to room temperature and add 10wt% dilute sulfuric acid to the activated product, at 70°C After washing under water for 180 min, the product was separated by filtration and washed with water until the pH value of the filtrate was neutral, and the solid product was dried at 150°C for 5 h to obtain activated carbon AC-3. The accessibility A of AC-3 is 1.7, and the specific surface area is 1521m 2 / g, 3.5MPa, 25°C methane adsorption capacity is 201mL / (g, STP).
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Abstract
Description
Claims
Application Information
- IPC
- C01B32/348; C01B32/30; C01B32/33; B01J20/20; B01J20/28
- CPC
- C01B32/348; C01B32/30; C01B32/33; B01J20/20; B01J20/28011; B01J20/205; B01J2220/4887
- Inventors
- 蔡海乐; 张舒冬