华东理工大学学报（自然科学版）2017，Vol.43Issue(4)：449-458,494,11.DOI:10.14135/j.cnki.1006-3080.2017.04.001
用于CH4/N2分离的高效活性炭制备及其吸附平衡和动力学研究
Preparation of High Efficient Coconut Activated Carbon and Its Adsorption Equilibria and Kinetics of CH4/N2
摘要
Abstract
Coconut activated carbon with high specific surface area was prepared through carbonization of raw coconut shell and KOH activation under optimum conditions.The adsorption selectivity of CH4/N2 was improved with CO2 activation in order to prepare the high efficient coconut activated carbon for the separation of CH4/N2.The adsorption equilibrium isotherms of CH4 and N2 on the high efficient coconut activated carbon were measured at 303-363 K and 0-1 000 kPa in a magnetic suspension balance.The experimental data were fitted with Toth model,and the model parameters and kinetic ones such as adsorption heat were obtained.Both the isothermal bidisperse pore model and the diluted breakthrough curve experiment were used to study the adsorption kinetics of CH4 and N2 on the high efficient coconut activated carbon.Furthermore,the fixed-bed adsorption and desorption experiments were carried out to study the separation mechanism of CH4/N2 using the coconut activated carbon.The results presented here would be significant for the development and optimization of pressure swing adsorption process for CH4/N2 effective separation using the high efficient coconut activated carbon.关键词
椰壳基活性炭/CH4/N2分离/吸附平衡/吸附动力学/非常规天然气Key words
coconut activated carbon/CH4/N2 separation/adsorption equilibrium/adsorption kinetics/unconventional natural gases分类
化学化工引用本文复制引用
杨林,杨颖,刘程琳,李平,于建国..用于CH4/N2分离的高效活性炭制备及其吸附平衡和动力学研究[J].华东理工大学学报（自然科学版）,2017,43(4):449-458,494,11.基金项目
国家国际合作项目(2015DFG42220,S2016G1410) （2015DFG42220,S2016G1410）
国家自然科学基金(U1610102) （U1610102）
