2023-02-102023-02-102020Romero, M., Navarro de Miguel, J.C., Bobadilla Baladrón, L.F., Domínguez Leal, M.I., Ivanova, S., Romero Sarria, F.,...,Odriozola Gordón, J.A. (2020). Time-resolved Operando DRIFTS-MS Study of the Moisture Tolerance of Small-pore SAPO-34 Molecular Sieves During CH4/CO2 Separation. Microporous and Mesoporous Materials, 298, 110071. https://doi.org/10.1016/j.micromeso.2020.110071.1387-1811https://hdl.handle.net/11441/142646This study pretends to evaluate and understand the effect of moisture presence during CO2/CH4 separation on small-pore SAPO-34 molecular sieves. Two SAPO-34 samples with different physicochemical properties (composition, crystal size and texture) were prepared by hydrothermal synthesis using either one or a mixture of two templates. Transient operando DRIFTS-MS measurements revealed that the sample's hydrophobic character is associated to the presence of Si islands, which enhanced sample's moisture tolerance during repetitive adsorption/desorption cycles. This knowledge is fundamental to achieve the rational design of efficient SAPO-34 membranes under realistic conditions.application/pdf33 p.engAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/CO2/CH4 separationMoisture toleranceOperando DRIFTS-MSSAPO-34info:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess10.1016/j.micromeso.2020.110071