Nitrogen-doped active carbon catalyzer and application thereof in chloroethylene synthesis
A technology of activated carbon and nitrogen doping, which is applied in the field of activated carbon catalysts, can solve environmental pollution and other problems, and achieve the effect of high conversion rate of acetylene and good catalytic performance
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Embodiment 1
[0025] Weigh 3.0g of imidazole and add 75ml of deionized water to dissolve in a beaker, weigh 60g of coconut shell-based activated carbon and add it to the imidazole solution, soak it at 25°C for 5 hours, dry the impregnated activated carbon at 120°C for 10 hours, after drying The activated carbon was calcined at 600°C for 6 hours under a nitrogen atmosphere to obtain a nitrogen-doped activated carbon catalyst. Using the obtained nitrogen-doped activated carbon catalyst to catalyze the reaction of acetylene and hydrogen chloride to synthesize vinyl chloride, the reaction temperature is 180°C, the space velocity is 30 / h, the conversion rate of acetylene is 60.5%, and the selectivity of vinyl chloride is 98.5%.
Embodiment 2
[0027] Weigh 30.0g of polyacrylamide and add 200ml of deionized water to dissolve in a beaker, weigh 60g of coal-based activated carbon and add it to the polyacrylamide solution, soak it at 20°C for 12 hours, and dry the impregnated activated carbon at 120°C for 12 hours , the dried activated carbon was calcined at 600° C. for 7 hours under a nitrogen atmosphere to obtain a nitrogen-doped activated carbon catalyst. Using the obtained nitrogen-doped activated carbon catalyst to catalyze the reaction of acetylene and hydrogen chloride to synthesize vinyl chloride, the reaction temperature is 180°C, the space velocity is 20 / h, the conversion rate of acetylene is 90.5%, and the selectivity of vinyl chloride is 98.6%.
Embodiment 3
[0029] Weigh 7.5g of pyridine and add 60ml of deionized water to dissolve in a beaker, weigh 50g of coal-based activated carbon and add it to the pyridine solution, soak it at 0°C for 24 hours, dry the impregnated activated carbon at 140°C for 6 hours, and the dried Activated carbon was calcined at 800° C. for 4 hours under a nitrogen atmosphere to obtain a nitrogen-doped activated carbon catalyst. Using the obtained nitrogen-doped activated carbon catalyst to catalyze the reaction of acetylene and hydrogen chloride to synthesize vinyl chloride, the reaction temperature is 150°C, the space velocity is 10 / h, the conversion rate of acetylene is 88.5%, and the selectivity of vinyl chloride is 98.8%.
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