成型工艺对活性炭孔结构及其CO_2吸附性能的影响  

Effect of Molding Conditions on the Pore Structure of Activated Carbon and Its CO_2 Adsorption Performance

作　　者：霍素敏[1] 邓洪贵[1] 王艳莉[1] 詹亮[1] 乔文明[1] 梁晓怿[1] 凌立成[1] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237

出　　处：《材料科学与工程学报》2009年第5期731-734,739,共5页Journal of Materials Science and Engineering

基　　金：国家863重点资助项目(2008AA062302);国家自然科学基金资助项目(20806024;50672025;5073003);中国博士点基金资助项目(20070251008);上海市国际合作资助项目(08160704000);上海市大学生创新计划资助项目(yx0237102-07)

摘　　要：用比表面积1183m2/g的活性炭和酚醛树脂分别作为吸附剂和粘结剂,考察了成型工艺对活性炭孔结构及其CO2吸附性能的影响。结果表明,活性炭成型后,比表面积有所下降,但对成型活性炭进行CO2二次物理活化可使其比表面积提高60.7%;粘结剂含量为30wt%、成型压力10MPa条件下所制的成型活性炭在800℃用CO2二次活化2h后,其比表面积、压缩强度和对CO2的平衡吸附量分别为1323m2/g、12.7MPa和0.67mmol/g。Monolith activated carbon（MAC） was prepared with phenolic resin as binder,in which the specific surface area of powdery activated carbon was 1183m2/g.Effect of molding conditions on the pore structure of activated carbon and CO2 adsorption performance were investigated.Results showed that the specific surface area of MAC was lower than that of activated carbon,but it would increase if the MAC was further physical-activated with CO2 as activation agent.When the MAC was prepared with 30wt% binder at the molding pressure of 10 MPa and further physical-activated at 800℃ for 2h,its specific surface area,compressive strength and equilibrium adsorption amount of CO2 were 1323m^2/g,12.7MPa and 0.67 mmol/g,respectively.

关 键 词：活性炭 二氧化碳 吸附 

分 类 号：TQ127.1[化学工程—无机化工]