典型文献
Tuning porosity of coal-derived activated carbons for CO2 adsorption
文献摘要：
A simple method was developed to tune the porosity of coal-derived activated carbons,which provided a model adsorbent system to investigate the volumetric CO2 adsorption performance.Specifically,the method involved the variation of the activation temperature in a K2CO3 induced chemical activation process which could yield activated carbons with defined microporous(＜2 nm,including ultra-microporous＜1 nm)and meso-micro-porous structures.CO2 adsorption isotherms revealed that the microporous activated carbon has the highest measured CO2 adsorption capacity(6.0 mmol·g-1 at 0℃and 4.1 mmol·g-1 at 25℃),whilst ultra-microporous activated carbon with a high packing density exhibited the highest normalized capacity with respect to packing volume(1.8 mmol·cm-3 at 0℃and 1.3 mmol·cm-3 at 25℃),which is significant.Both experimental correlation analysis and molecular dynamics simulation demonstrated that(i)volumetric CO2 adsorption capacity is directly proportional to the ultra-micropore volume,and(ii)an increase in micropore sizes is beneficial to improve the volumetric capacity,but may lead a low CO2 adsorption density and thus low pore space utilization efficiency.The adsorption experiments on the activated carbons established the criterion for designing CO2 adsorbents with high volumetric adsorption capacity.
文献关键词：
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作者姓名：
Zhipeng Qie;Lijie Wang;Fei Sun;Huan Xiang;Hua Wang;Jihui Gao;Guangbo Zhao;Xiaolei Fan
作者机构：
School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;Department of Chemical Engineering and Analytical Science,The University of Manchester,Manchester M13 9PL,UK;China Datang Corporation Renewable Energy Science and Technology Research Institute,Beijing 100052,China;Energy and Bioproducts Research Institute(EBRI),Aston University,Birmingham B4 7ET,UK
文献出处：
引用格式：
[1]Zhipeng Qie;Lijie Wang;Fei Sun;Huan Xiang;Hua Wang;Jihui Gao;Guangbo Zhao;Xiaolei Fan-.Tuning porosity of coal-derived activated carbons for CO2 adsorption)[J].化学科学与工程前沿,2022(09):1345-1354
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Tuning,porosity,coal,derived,activated,carbons,adsorption,simple,method,was,developed,tune,which,provided,model,system,investigate,volumetric,performance,Specifically,involved,variation,activation,temperature,K2CO3,induced,chemical,process,could,yield,defined,microporous,including,ultra,meso,structures,isotherms,revealed,that,has,highest,measured,capacity,whilst,packing,density,exhibited,normalized,respect,significant,Both,experimental,correlation,analysis,molecular,dynamics,simulation,demonstrated,directly,proportional,micropore,ii,increase,sizes,beneficial,improve,but,may,lead,low,thus,space,utilization,efficiency,experiments,established,criterion,designing,adsorbents
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0.487991
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