应用化学2018，Vol.35Issue(4)：462-468,7.DOI:10.11944/j.issn.1000-0518.2018.04.170102
A型沸石/活性炭复合材料的制备及甲烷/氮气吸附分离性能
Synthesis of Zeolite A/Activated Carbon Composite and CH4/N2Adsorption Separation Performance
摘要
Abstract
A shaped activated carbon(AC)prepared after carbonization and physical activation,starting from pitch and elutrilithe,was further hydrothermally treated with alkaline solution.The effect of crystallization time on the formation of zeolite 4A,the pore structure and the adsorption ability of the composite towards CH4and N2were investigated by X-ray diffraction(XRD), scanning electron microscopy(SEM), N2adsorption-desorption at 77 K and CO2adsorption isotherm at 273 K.The results show that silicon and aluminum in this composite are converted to zeolite 4A during the hydrothermal treatment.Simultaneously,micropores between 0.45 ~0.6 nm are appeared, the micropore volume is increased, accompanied by the presence of a few mesopores and macropores.Adsorption isotherms at 298 K indicate that the adsorption amount of CH4by composite AC-2(crystalized for 6 hours)is elevated to 10.8 mL/g with a high CH4/N2equilibrium selectivity of 3.7.关键词
煤矸石/甲烷/氮气/吸附/分离Key words
elutrilithe/methane/nitrogen/adsorption/separation分类
化学化工引用本文复制引用
杨程,齐金山,崔杏雨,程文萍,马静红,李瑞丰..A型沸石/活性炭复合材料的制备及甲烷/氮气吸附分离性能[J].应用化学,2018,35(4):462-468,7.基金项目
国家自然科学基金(51204120) （51204120）
山西省青年科技研究基金(2014021014-1) （2014021014-1）
山西省煤基重点科技攻关项目(FT201402-03)资助 Supported by the National Natural Science Foundation of China(No.51204120),the Natural Science Foundation for Young Scientists of Shanxi Province,China(2014021014-1),the Key Scientific and Technological Project of Coal Fund of Shanxi Province(No.FT201402-03). （FT201402-03）
