文章摘要
刘靖,何选明,柯萍,冯东征.石莼基微/中孔复合结构活性炭的制备及性能[J].精细化工,2019,36(2):0
石莼基微/中孔复合结构活性炭的制备及性能
The preparation of micro- and mesostructure ulva-based activated carbon and its properties
投稿时间:2018-05-18  修订日期:2018-09-11
DOI:
中文关键词: 石莼  活性炭  吸附性能  比表面积  孔结构
英文关键词: ulva  activated carbon  adsorption property  specific surface area  porous structure
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
刘靖 武汉科技大学 1325474289@qq.com 
何选明 武汉科技大学 ljliujing@outlook.com 
柯萍 武汉科技大学  
冯东征 武汉科技大学  
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中文摘要:
      以海洋海藻废弃物石莼为原料,通过热解预炭化,KOH活化制备活性炭。以碘吸附值和亚甲基蓝吸附值为吸附性能评价指标,探究了活化工艺对活性炭吸附性能的影响。结果表明,当KOH/石莼半焦质量比为3:1、活化时间为45min、活化温度为800℃时,活性炭吸附性能最优,其碘吸附值和亚甲基蓝吸附值最大,分别为1824.19mg/g、914.98 mg/g,。FTIR测试表明,活性炭含有大量羟基等官能团。SEM测试表明,活性炭表面粗糙、存在大量孔结构。活性炭的BET比表面积为2616.3m2/g,Langmuir比表面积高达4883.5m2/g,平均孔径为2.73nm。石莼基活性炭的孔结构为微/中孔复合结构,有作为储能、环保材料的潜质。
英文摘要:
      Specific surface area activated carbon was prepared from pyrolysis semi-coke of marine garbage ulva by using KOH. The effect of activation process on adsorption performance of activated carbon was investigated by means of iodine adsorption and methylene blue adsorption. The iodine adsorption value and methylene blue adsorption value of activated carbon could be up to1824.19mg/g、914.98 mg/g when the semi-coke activated under the optimal conditions of mass ratio of KOH/semi-coke 3:1, activated temperature 800℃, activated time 45 min. The FTIR showed that the surface functional group of activated carbon contained a large number of hydroxyl groups. The SEM showed that the surface of activated carbon was very rough and had plenty of pore structure. BET surface area and Langmuir surface area were up to 2616.3 m2/g and 4883.5m2/g respectively. Activated carbon had micro- and mesostructure with pore size of 2.73 nm, so that it had the potential as the material of energy storage and environmental protection.
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