【摘要】 以蔗糖为碳源,F127为表面活性剂,采用K₂CO₃活化合成蔗糖碳前体,在氮气保护下炭化制备碳分子筛。通过SEM、FTIR和N2-吸/脱附手段对碳分子筛样品进行表征,优化样品制备工艺过程。结果表明,在炭化温度为800℃下,活化剂K2CO₃浓度为0.5mol/L,F127/蔗糖质比1∶3,反应温度45℃,反应时间12h制备的碳分子筛表面孔结构显著,孔隙发达,比表面积高达1366.4423m2/g,孔容为0.865796cm3/g,孔径集中在0.64nm。更多还原

【Abstract】 The carbon precursor of sucrose was prepared by K₂CO₃ activation synthesis method in which used sucrose as carbon source,F127 as surfactant,carbon molecular sieve obtained by carbonization under nitrogen protection.The samples were characterized by SEM,FTIR and N2-adsorption desorption to optimize the sample preparation process.The results showed that the obtained samples that was the remarkable surface pore structure and the pore developed was composed of a high specific surface area of 1366.4423m2/g,Aperture concentration in 0.64 nm a single point of pore volume of 0.865796cm3/g under the condition of carbonization temperature800℃,K₂CO₃ concentration of 0.5mol/L,weight ratio of F127 to starch of 1∶3,reation temperature of 45℃,reaction time of 12 h.更多还原