Synthesis of Highly Microporous Sulfur-Containing Activated Carbons by a Multistep Modification Process  

作　　者：FANG Kai SHENG Jie YANG Rendang 方楷;SHENG Jie;杨仁党(State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510641,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2020年第5期856-862,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Key Technology R&D Program,China(No.2017YFB0307900)。

摘　　要：The sulfur-containing activated carbons(SACs)were prepared by CO2 activation and sulfur impregnation.The sulfur-containing samples were then oxidized in air.The SACs were characterized by N2 adsorption,elemental analysis,thermogravimetric analysis,X-ray photoelectron spectroscopy,Raman spectroscopy,and X-ray diffraction.The CO2 activation provided precursor carbons with high porosity,which in turn were sulfurized effectively.Oxidation in air at 200℃enlarged pores and redistributed amorphous sulfur in the hierarchical pores.A typical SAC containing 17.89%sulfur exhibited a surface area of 1464 m2/g.This work may open up a valid route to prepare highly microporous SACs with high sulfur loading for applications where the presence of sulfur is beneficial.

关 键 词：sulfur loading MICROPORE CO2 ctivation air oxidation porous carbons 

分 类 号：TQ127.11[化学工程—无机化工]