Ünügül, TubaNigiz, Filiz Uğur2023-06-052023-06-052022Ünügül, T., & Nigiz, F. U. (2022). Hydrogen purification using natural zeolite-loaded hydroxyethyl cellulose membrane. International Journal of Energy Research, 46(2), 1826-1836. doi:10.1002/er.72990363-907X1099-114Xhttps://doi.org/10.1002/er.7299https://hdl.handle.net/20.500.12428/4257In this study, natural zeolite-loaded hydroxyethyl cellulose (HEC) mixed-matrix membranes were produced and used for separation of hydrogen (H2) from carbon dioxide (CO2). Structural, thermal, and morphological properties of the mixed-matrix membranes were investigated. The effects of zeolite addition and trans-membrane pressure on the gas permeability and H2/CO2 selectivity have been evaluated. As the zeolite ratio in the membrane increased, H2/CO2 selectivity increased. The highest H2/CO2 selectivity of 8.85 was obtained using 20 wt% of natural zeolite-loaded membrane at a constant pressure difference of 4 bar. The selectivity and permeability values of 20 wt% zeolite-loaded membrane exceeded the Robeson's upper bound curve-1991.eninfo:eu-repo/semantics/closedAccessHydrogen purificationHydroxyethyl celluloseMembrane gas separationMixed-matrixmembraneZeoliteArticle4621826183610.1002/er.7299Q1WOS:0006998604000012-s2.0-85115730415