不同结构活性炭对CO_2、CH_4、N_2及O_2的吸附分离性能  

Adsorptive separation properties of activated carbons with different pore structures for CO_2,CH_4,N_2 and O_2

作　　者：王玉新[1] 苏伟[2] 周亚平[1] 

机构地区：[1]天津大学理学院化学系,天津300072 [2]天津大学化工学院高压吸附实验室,天津300072

出　　处：《化工进展》2009年第2期206-209,221,共5页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金项目(20336020;90510013)

摘　　要：制备了比表面积为1943m2/g的纯微孔活性炭AC-1和比表面积为1567m2/g,中孔比例为47.18%的活性炭AC-2。分别以AC-1及AC-2为吸附剂测定CO2、CH4、N2和O2的298K吸附等温线,考察了两种活性炭对CO2/N2、CO2/CH4及CH4/N2气体混合物的吸附分离性能。实验结果表明,孔结构是影响吸附剂吸附分离性能的主要因素。富中孔活性炭AC-2较AC-1更适用于CO2/N2、CO2/CH4气体混和物的吸附分离,而微孔活性炭AC-1对CH4/N2混合体系的吸附分离性能优于AC-2。A micropore activated carbon （AC-1） with 1943m^2/g specific surface area and an activated carbon （AC-2） with 1567m^2/g specific surface area and 47.18% mesopores were prepared. Adsorption isotherms of CO2, CH4, N2 and O2 on AC-1 and AC-2 were determined at 298K and the adsorption separation properties of the activated carbons for the mixtures of CO2/N2, CO2/CH4 and CH4/N2 were discussed. The results showed that the pore structure was the main factor affecting the adsorption separation properties of the activated carbons. AC-2 which with many mesopores was more suitable for the adsorptive separation of the mixtures of CO2/N2, CO2/CH4 than AC-1 with only micropores, while AC-1 was more suitable for the adsorptive separation of CH4/N2 than AC-2.

关 键 词：活性炭 吸附 分离 

分 类 号：TQ424.1[化学工程]