欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
考察了3种不同孔结构的球形活性炭（氢氧化钾和水蒸汽活化的苯乙烯基球形活性炭以及沥青基球形活性炭，PACSKOH、PACSsteam、ACSpitch）对二苯并噻吩（DBT）的吸附行为。结果表明，DBT在球形活性炭上的吸附符合Freundlich吸附等温线，吸附容量与比表面积无关，而与孔径〈0．8nm的超微孔孔容相关。PACSKOH中微孔和〈0．8nm的超微孔含量最多，对DBT的吸附容量最大，它的吸附容量分别是PACSsteam和ACSpitch的1．4和1．6倍。球形活性炭对DBT的吸附符合准二级动力学方程，PACSsteam中孔和大孔径的微孔含量最多，初始吸附速率最大，吸附半衰期最短；ACSpitch中孔含量少，初始吸附速率最小；PACSKOH〈0．8nm的超微孔含量多，DBT需要沿孔壁方向取向，并平行孔壁进入超微孔，导致吸附半衰期最长。
英文摘要：
The adsorption equilibrium and kinetics of dibenzothiophene on three activated carbon spheres （ACS） （polystyrene-based ACS by KOH activation （PACSKOH） and by steam activation （PACSsteam）, and ACS derived from pitch （ACSpitch）） were investigated. The results revealed that the equilibrium data for DBT adsorption fitted the Freundlich Model well. The adsorption of DBT is rather related to the volume of small-micropores （〈 0.8nm） than to the surface area. PACSKOH showed highest adsorption capacity towards DBT, which is 1.4 and 1.6 times larger than those of PACSsteam and ACSpitch, respectively. The adsorption of DBT can be best described by a pseudo-second-order equation. PACSsteam showed highest initial adsorption rate and smallest adsorption half-life time. ACSpitch have smallest initial adsorption rate due to the low volume of mesopores. PACSKOH need the highest adsorption half-life time because DBT has to be parallel to the pore entrance into the micropores （〈 0.8nm）.
同期刊论文项目
同项目期刊论文
The superior electrochemical performance of oxygen-rich activated carbons prepared from bituminous c
Molecular design of polymer precursors for controlling microstructure of organic and carbon aerogels
Effect of template and precursor chemistry on pore architectures of triblock copolymer-templated mes
Modification of polystyrene-based activated carbon spheres to improve adsorption of dibenzothiophene
Influence of nitrogen hetero-substitution on the electrochemical performance of coal-based activated
Fabrication of hierarchical porous carbide-derived carbons by chlorination of mesoporous titanium ca
Asymmetric capacitance response from the chemical characteristics of activated carbons in KOH electr
Capacitive matching of pore size and ion size in the negative and positive electrodes for supercapac
New concept of in situ carbide-derived carbon/xerogel nanocomposite materials for electrochemical ca
Facile synthesis of hierarchically structured Fe(3)O(4)/carbon micro-flowers and their application t
Ion Transport Behavior in Triblock Copolymer-Templated Ordered Mesoporous Carbons with Different Por
Genetic algorithm-least squares support vector regression based predicting and optimizing model on c
Preparation of Highly- Conductive CNTs/Polyaniline Composites through Plasma Pretreating and In-situ
Hollow carbon nanospheres prepared by carbonizing polymethylmethacrylate/polyacrylonitrile core/shel
Surface modification of pitch-based spherical activated carbon by CVD of NH3 to improve its adsorpti
Preparation and microstructure control of carbon aerogels produced using m-cresol mediated sol-gel p
期刊信息
位置：