摘要
以低变质粉煤与液化残渣为原料,水蒸气为活化剂,研究了活化时间与活化温度对成型活性炭吸附性能、抗压强度和活性炭收率的影响。采用N2吸附、SEM、碘吸附等手段对成型活性炭的孔径分布及吸附性能进行了分析表征。研究表明,经700℃炭化1.0h,800℃水蒸气活化1.5h制备的成型活性炭碘吸附值为820mg/g,活性炭收率为36.63%,抗压强度为0.08MPa,比表面积为509m2/g,其总孔容积达0.35cm3/g。随着活化时间的延长,成型活性炭的碘吸附值先增大后减小,炭化收率和抗压强度都逐渐降低;随着活化温度的升高,成型活性炭的碘吸附值先增大后减小,炭化收率和抗压强度都逐渐减小。
Effect of activation time and temperature on briquetting activated carbon＇s adsorption properties,compressive strength and carbonization yield were studied,which was prepared from low rank coal and liquefaction residue by steam.The pore size distribution and adsorption of the briquetting activated carbon were characterized by N2 adsorption,SEM and iodine adsorption measurement.Results show that the iodine adsorption value,yield,compressive strength,specific surface area and total pore volume of the briquetting activated carbon carbonized at 700 ℃ for 1 h and activated by steam at 800 ℃ for 1.5 h can reach to 820 mg/g,36.63％,0.08 MPa,509 m2/g and 0.35 cm3/g separately.The iodine adsorption value of briquetting activated carbon increased firstly and then decreased,yield of activated carbon and compressive strength decreased with the increase of activation time The iodine adsorption value of briquetting activated carbon increased firstly and then decreased and the yield of activated carbon and compressive strength decreased with the increase of activation temperature.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2014年第10期25-28,33,共5页
Materials Reports
基金
国家高技术研究发展计划(863)项目(2011AA05A202)
陕西省科技统筹计划项目(2011KTDZ01-05-01/05)
陕西省教育厅重点实验室专项(13JS059)
关键词
成型活性炭
碘吸附值
抗压强度
收率
比表面积
briquetting activated carbon
iodine adsorption value
compressive strength
yield
specific surface area
