Method for preparing nitrogen/carbon-containing material by biomass pyrolysis and carbonization

[0031] In this example, a quartz tubular reactor with a diameter of 34 mm and a length of 300 mm was used, and the heating part in the reactor was isolated with quartz wool. Install the quartz reactor in a temperature-controlled furnace. During operation, ammonia gas was used as a carrier gas, and its flow rate was controlled by a gas flow meter. The carrier gas used in this experiment was NH 3 or NH 3 / N 2 , NH 3 / He mixture. The reaction raw materials and the catalyst are evenly mixed and flow together with the carrier gas flow from the opening of the quartz tube to the pyrolysis interface. The liquid product flows from the reactor to the condenser, the gas product is collected in a gas sampling bag, and the solid product is supported by quartz wool. After the reaction is complete, the catalyst and the solid product produced by the reaction are separated and collected and weighed. The separated solid product is nitrogen-containing biomass carbon material. In this exa

[0034] In this example, 6 different catalysts were tested for the catalytic pyrolysis of cellulose, including: γ-Al 2 o 3 , SiO 2 -Al 2 o 3 , SnO 2 / SO 42- , MCM-41, HZSM-5. The powdered reactant was prepared by physically mixing carbohydrate feed and catalyst. In this experiment, the ratio of catalyst to bagasse was 2, the reaction temperature was 550°C, and the gas flow rate was 200ml / min. The pyrolytic carbonization time is 0.5h. The catalyst is mixed with cellulose and ground into powder.

[0035]

[0036]

[0038] In this example, the influence of different catalysts to biomass ratios on nitrogen-containing biomass carbon materials is tested. The catalyst in this experiment is γ-Al 2 o 3 , the reaction temperature is 550°C, the gas flow rate is 200ml / min, and the pyrolysis carbonization time is 0.5h. The catalyst is mixed with cellulose and ground into powder.

[0039]