Green method for preparing high-carbon-content porous biochar material
A biochar and green technology, applied in carbon compounds, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as difficult large-scale application, difficult to remove hydrochloric acid, strong corrosion, etc., to achieve easy large-scale application, low ammonia concentration Low, porosity-enhancing effect
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Embodiment 1
[0041] The embodiment of the present invention describes a method of using biomass to prepare nitrogen-doped carbon catalyst, and the method specifically includes the following steps:
[0042] S1: After pulverizing the bamboo waste to <120 mesh, fully mix it with KOH activator by dipping, the ratio of the three is 1:50, after dipping for 24 hours, evaporate the water in it under an argon atmosphere at 60°C, and get mixed samples;
[0043] S2: Put the mixed sample in step S1 into a fixed bed reactor for activation reaction under argon atmosphere, the heating rate is 100°C / min, the high carrier gas flow rate is 1L / min, the reaction temperature is 900°C, and the reaction time is For 2 hours, the biomass fully reacts with the alkaline activator to obtain activated carbon with high porosity and high content;
[0044] S3: Put the activated carbon obtained in step S2 into the ammonia solution, the concentration of ammonia water is 15%, shake and soak for 1 day, the ammonia water is ...
Embodiment 2
[0048] S1: After pulverizing the bamboo waste to <120 mesh, fully mix it with KOH activator by dipping, the ratio of the three is 1:50, after dipping for 24 hours, evaporate the water in it under an argon atmosphere at 60°C, and get mixed samples;
[0049] S2: Put the mixed sample in step S1 into a fixed bed reactor for activation reaction under argon atmosphere, the heating rate is 100°C / min, the high carrier gas flow rate is 1L / min, the reaction temperature is 900°C, and the reaction time is For 2 hours, the biomass fully reacts with the alkaline activator to obtain activated carbon with high porosity and high content;
[0050] S3: Put the activated carbon obtained in step S2 into the ammonia solution, the concentration of ammonia water is 10%, shake and soak for 1 day, the ammonia water fully reacts with the unreacted SiO in the activated carbon 2 reaction to obtain activated carbon after ammonia treatment;
[0051] S4: Immerse the activated charcoal obtained in step S3 i...
Embodiment 3
[0054] S1: After pulverizing the bamboo waste to <120 mesh, fully mix it with KOH activator by dipping, the ratio of the three is 1:50, after dipping for 24 hours, evaporate the water in it under an argon atmosphere at 60°C, and get mixed samples;
[0055] S2: Put the mixed sample in step S1 into a fixed bed reactor for activation reaction under argon atmosphere, the heating rate is 100°C / min, the high carrier gas flow rate is 1L / min, the reaction temperature is 900°C, and the reaction time is For 2 hours, the biomass fully reacts with the alkaline activator to obtain activated carbon with high porosity and high content;
[0056] S3: Put the activated carbon obtained in step S2 into the ammonia solution, the concentration of ammonia water is 5%, shake and soak for 1 day, the ammonia water is fully mixed with the unreacted SiO in the activated carbon 2 reaction to obtain activated carbon after ammonia treatment;
[0057] S4: Immerse the activated charcoal obtained in step S3 ...
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