文献类型：期刊文献

英文题名：Adsorption of Pure and Binary CO2, CH4, and N2 Gas Components on Activated Carbon Beads

作者：Wu, Yi-Jiang[1];Yang, Ying[1];Kong, Xiang-Ming[1];Li, Ping[1];Yu, Jian-Guo[1];Ribeiro, Ana M.[2];Rodrigues, Alirio E.[2]

机构：[1]E China Univ Sci & Technol, Coll Chem Engn, State Key Lab Chem Engn, Shanghai 20037, Peoples R China;[2]Univ Porto, Fac Engn, Dept Chem Engn, Lab Separat & React Engn LSRE,Associated Lab LSRE, P-4200465 Oporto, Portugal

年份：2015

卷号：60

期号：9

起止页码：2684

外文期刊名：JOURNAL OF CHEMICAL AND ENGINEERING DATA

收录：;EI(收录号：20153701270323);WOS:【SCI-EXPANDED(收录号:WOS:000361253500018)】；

基金：Authors would like to acknowledgement the finance support from MOST of China under the Program of International S&T Cooperation (2015DFG42220). China Postdoctoral Science Foundation funded project (2015M570339). This work is also financed by FCT of Portugal under the Cooperation Project FCT/CHINA 441.00.

语种：英文

外文关键词：Activated carbon - Carbon dioxide - Binary mixtures - Adsorption isotherms - Gas adsorption - Methane

摘要：The adsorption equilibriums of CO2 CH4, and N-2 pure gases on pitch-based activated carbon beads have been studied using a magnetic suspension microbalance at (293, 303, 333, and 363) K within a pressure range of 0 kPa to 4000 kPa. It is found that experimental adsorption capacities can be successfully described with both the Sips and Multisite Langmuir (MSL) isotherm models. Afterward, binary competitive adsorption breakthrough experiments (CO2/CH4 and CH4/N-2) at 303 K and adsorption isotherms of gas mixtures under different conditions have been measured. Theoretical calculations from Sips model-based ideal adsorbed solution theory are found to have better agreement with experimental data of competitive binary adsorption than that from MSL model. Promising adsorption selectivity (5.5) between CH4 and N-2 is obtained at 303 K as the pressure of a binary gas mixture is 100 kPa with y(CH4) = 0.5 in the feed. Therefore, the activated carbon beads reported in this study can be considered as a promising adsorbent for CH4 enrichment from coalbed methane (CH4/N-2) gas mixture.