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Analyses of adsorption behavior of CO2, CH4, and N2 on different types of BETA Zeolites
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Orientador(es)
Resumo(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.
Descrição
Palavras-chave
Adsorption equilibrium Natural gas upgrading Response surface methodology Zeolite BETA Zero-length-column technique
Contexto Educativo
Citação
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
Editora
Wiley-VCH Verlag