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Advisor(s)
Abstract(s)
The adsorption equilibrium and kinetics of CO2, CH4, and N2 on three types of
BETA zeolites were investigated at different temperatures and a defined partial
pressure range from dynamic breakthrough experiments. The adsorbed amount
followed the decreasing order of CO2 >CH4 >N2 for all studied materials. For the
same ratio of SiO2/Al2O3, the Na-BETA-25 zeolite showed a higher uptake capacity
than H-BETA-25, due to the presence of a Na+ cationic center. Comparing the
same H+ compensation cation, zeolite H-BETA-25 expressed a slightly higher
adsorption capacity than H-BETA-150. Regarding the selectivity of gases, based
on their affinity constants, H-BETA-150 displayed the best ability. The adsorption
kinetics was considered using the zero-length-column (ZLC) technique. Response
surface methodology (RSM) was applied to evaluate the interactions between
adsorption parameters and to describe the process.
Description
Keywords
Adsorption equilibrium Natural gas upgrading Response surface methodology Zeolite BETA Zero-length-column technique
Citation
Henrique, Adriano; Karimi, Mohsen; Silva, José A.C.; Rodrigues, A.E. (2019). Analyses of adsorption behavior of CO2, CH4, and N2 on different types of BETA Zeolites. Chemical Engineering and Technology. ISSN 1521-4125. 42:2, p. 327–342
Publisher
Wiley-VCH Verlag