TY - JOUR
T1 - Adsorption equilibria of CO2, CH4, N2, O2, and Ar on high silica zeolites
AU - Bao, Zongbi
AU - Yu, Liang
AU - Dou, Tao
AU - Gong, Yanjun
AU - Zhang, Qing
AU - Ren, Qilong
AU - Lu, Xiuyang
AU - Deng, Shuguang
PY - 2011/11/10
Y1 - 2011/11/10
N2 - Adsorption equilibria of CO2, CH4, N2, O2, and Ar were determined on three lab-synthesized ZSM-5 adsorbents and four commercially available high silica zeolites including HiSiv-3000, HSZ-980HOA, HSZ-890HOA, and HSZ-390HUA. The synthesized ZSM-5 samples have a similar pore textural property (Brunauer-Emmett-Teller (BET) surface area and pore volume) as that of HiSiv-3000. The BET surface areas and total pore volume of the ZSM-5 sample were found to be ∼300 m2·g -1 and 0.2 cm3·g-1, respectively. The synthesized materials have relatively higher adsorption capacities than those of HiSiv-3000 for the gases studied in this work. The order of adsorption capacities of CO2, CH4, N2, Ar, and O 2 on each high silica zeolite follows the order of their polarizabilities. The selectivities of N2/O2 and Ar/O 2 pairs are close to 1.0, suggesting that it is very difficult to separate them by equilibrium-based adsorption processes. HSZ-890HOA and synthesized DT-100 showed higher equilibrium selectivities for CO2 over N2 and CH4, implying that they are potential adsorbents for CO2 separation from flue gases as well as landfill gases.
AB - Adsorption equilibria of CO2, CH4, N2, O2, and Ar were determined on three lab-synthesized ZSM-5 adsorbents and four commercially available high silica zeolites including HiSiv-3000, HSZ-980HOA, HSZ-890HOA, and HSZ-390HUA. The synthesized ZSM-5 samples have a similar pore textural property (Brunauer-Emmett-Teller (BET) surface area and pore volume) as that of HiSiv-3000. The BET surface areas and total pore volume of the ZSM-5 sample were found to be ∼300 m2·g -1 and 0.2 cm3·g-1, respectively. The synthesized materials have relatively higher adsorption capacities than those of HiSiv-3000 for the gases studied in this work. The order of adsorption capacities of CO2, CH4, N2, Ar, and O 2 on each high silica zeolite follows the order of their polarizabilities. The selectivities of N2/O2 and Ar/O 2 pairs are close to 1.0, suggesting that it is very difficult to separate them by equilibrium-based adsorption processes. HSZ-890HOA and synthesized DT-100 showed higher equilibrium selectivities for CO2 over N2 and CH4, implying that they are potential adsorbents for CO2 separation from flue gases as well as landfill gases.
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U2 - 10.1021/je200394p
DO - 10.1021/je200394p
M3 - Article
AN - SCOPUS:80955171965
SN - 0021-9568
VL - 56
SP - 4017
EP - 4023
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
IS - 11
ER -