煤基碳分子筛的制备及CH_4/N_2分离性能研究  

Preparation of coal-based carbon molecular sieve and its application effects in CH_4/N_2 separation

作　　者：张进华[1,2] 车永芳[1,2] 李兰廷[1,2] 梁大明[1,2] 段超[1,2] 何正刚 

机构地区：[1]煤炭科学研究总院北京煤化工研究分院,北京100013 [2]煤炭资源开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013 [3]北京天地玛珂电液控制系统有限公司,北京100013

出　　处：《洁净煤技术》2011年第2期64-67,共4页Clean Coal Technology

摘　　要：以煤为原料,通过气相碳沉积法制备了CH4/N2变压吸附分离用碳分子筛,研究了苯沉积量对碳分子筛吸附性能的影响。用液氮吸附（77 K）、扫描电镜对碳分子筛孔结构及表面形貌进行了表征,结果表明：制备的碳分子筛（CMS-1）平衡分离系数大于5,比表面积SBET=251.5 m2/g,微孔孔容Vm=0.1178 mL/g,孔径主要分布在0.35~2 nm,能满足CH4/N2变压吸附分离要求。Take coal as raw material to produce carbon molecular sieves with the method of vapor carbon deposition,which is used to concentrate methane from CH4/N2 mixtures.The effect of benzene deposition amount on the adsorption properties was studied.The pore structure of carbon molecular sieves was characterized by liquid nitrogen adsorption method（77 K）.Environmental scanning electron microscopy（ESEM） was used to observe the surface morphology.The experimental results show that equilibrium separation factor of CMS-1 is greater than five,CMS-1 can meet the CH4/N2 PSA separation requirement,its BET specific surface area is 251.5 m2/g,the micro pore volume is 0.1178 cm3/g and its pore diameter size distributes mostly from 0.35 nm to 2.00 nm.

关 键 词：碳分子筛 煤 变压吸附 吸附量 

分 类 号：TD7[矿业工程—矿井通风与安全] X79[环境科学与工程—环境工程]