Method for low-temperature rapid hydro-thermal synthesis of submicron carbon spheres from cellulose

• Main Authors: ZHOU HUI, LI QINGHAI, YU SHIJIE, ZHANG YANGUO, YANG XIAOXIAO
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention discloses a method for low-temperature rapid hydro-thermal synthesis of submicron carbon spheres from cellulose, which comprises the following steps: placing cellulose and water in a reaction kettle according to a mass ratio of (1-3): 50, increasing the pressure of the reaction kettle and maintaining the pressure at a reaction pressure which is 8-20 MPa; heating the reaction kettle to a preset temperature of 200-250 DEG C, maintaining the temperature for 0-30 minutes after the expected temperature is reached, stopping heating, and cooling the reaction kettle; and filtering the cooled reaction product in the reaction kettle to obtain a solid product, and drying to obtain the submicron carbon spheres. The method has the advantages of mild conditions, rapid reaction, simple method and the like. 本发明公开了一种纤维素低温快速水热合成亚微米碳球的方法，将纤维素和水按照质量比为(1-3):50放置于反应釜中，使反应釜压力提升并维持在反应压力，所述反应压力选用8-20MPa；使反应釜升温加热至预设温度，当达到预期温度后维持0-30min后停止加热并使反应釜冷却，所述预设温度为200-250℃；将冷却后的反应釜内的反应产物过滤得到固体产物并干燥，即得到亚微米碳球。本发明具有条件温和、反应快速、方法简单等优点。