文献类型：期刊文献

中文题名：活性炭微结构与吸附、解吸CO_2的关系

英文题名：Effect of adsorption and desorption CO_2 on micro-structures of activated carbon

作者：简相坤[1] 刘石彩[1,2]

第一作者：简相坤

通信作者：Liu, S.-C.

机构：[1]中国林业科学研究院林产化学工业研究所;[2]江苏省生物质能源与材料重点实验室

年份：2013

期号：2

起止页码：326-330

中文期刊名：煤炭学报

外文期刊名：Journal of China Coal Society

收录：CSTPCD;;EI(收录号：20131616214061);Scopus(收录号：2-s2.0-84876057978);北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：农业科技成果转化资金资助项目(2012GB24320583);国家科技支撑计划资助项目(2012BAD30B03)

语种：中文

中文关键词：活性炭;微结构;吸附;解吸;CO2;表面化学性质

外文关键词：activated carbon ; micro-structure ; adsorption ; desorption ; carbon dioxide ; surface chemical property

分类号：TQ424.1

摘要：采用6种不同活性炭,在常压动态吸附装置中研究0,15,25和38℃时活性炭对CO2的吸附及解吸性能。通过CO2和N2的吸附等温线表征活性炭的孔隙结构,用红外光谱和Boehm滴定法表征活性炭的表面化学性质。结果表明：微孔孔容的大小是决定活性炭对CO2吸附性能好坏的关键因素,其中0.5~1.0 nm的微孔对CO2吸附能力的影响较大,同时2.0~4.5 nm的中孔也对CO2吸附有积极的贡献,温度升高使活性炭的吸附和解吸速率都加快,活性炭表面官能团中羧基和羟基对CO2的吸附有明显的促进作用,而羰基不利于解吸。
The adsorption and desorption properties of carbon dioxide（ CO2 ） on six activated carbons were investigated at 0,15,25,38℃ in an atmospheric dynamic adsorption reactor. The adsorbents were characterized by CO2 and N2 ad- sorption isotherms, FT-IR analysis and Boehm titration. The results show that micropore volume of activated carbons is an important factor to characterize the adsorption performance of CO2, the pore size distribution in the range of 0. 5- 1.0 nm or 2.0-4. 5 nm trend to enhance the adsorption of CO2. The rate of adsorption or desorption increases with the increase of temperature. The adsorption capacity of CO2 increases with an increase of carboxyl and hydroxy groups on activated carbons. However,the increase of carbonyl groups would reduce the desorption capacity of CO2.