煤炭转化2017，Vol.40Issue(2)：73-80,8.
CH4和N2在炭分子筛及13X沸石上的吸附分离
Adsorptive Separation of CH4 and N2 on Carbon Molecular Sieve and 13X Zeolite
摘要
Abstract
Adsorption quantity of CH4 and N2 on T-CMS and 13X zeolite at 298.15 K,313.15 K and 328.15 K were measured respectively,Langmuir model was used to fit the experimental data,and the change of fitting parameters,saturated adsorption capacity qm and adsorption equilibrium constant b,were analyzed.The results show that the qm of CH4 on T-CMS slightly decreases as the temperatures rise,but the variation is small;the qm of N2 on T-CMS increases;and the qm of CH4 and N2 on 13X zeolite decreases.However,the adsorption equilibrium constant b increases with the rising of temperature.Separation coefficients of CH4 and N2 on T-CMS are larger than that on 13X zeolite,and both decrease with the increase of temperature.The analysis of adsorption thermodynamics shows that the average adsorption isosteric heat of CH4 and N2 on T-CMS are 27.30 kJ/mol and 22.43 kJ/mol respectively,but that on 13X zeolite are 12.96 kJ/mol and 10.41 kJ/mol respectively.The studied adsorbents have stronger adsorption effect on CH4 than that on N2,which both belong to physical adsorption.关键词
CH4/N2/吸附量/分离系数/吸附热Key words
CH4/N2/adsorption quantity/separation coefficient/adsorption heat分类
化学化工引用本文复制引用
王德超,杨志远,廖宏斌,刘娇萍,李智华..CH4和N2在炭分子筛及13X沸石上的吸附分离[J].煤炭转化,2017,40(2):73-80,8.基金项目
国家科技重大专项项目(20112X05037-003)和陕西省科技攻关项目(2010K07-20). （20112X05037-003）
