Effect of physicochemical properties on the performance of palladium-based composite membranes: A review

This review sought to evaluate how the materials present in the membranes and the operational conditions influence the hydrogen permeation performance. Using the PRISMA methodology, scientific articles published since 2017 related to the subject were selected using five keywords. A table was elaborated with materials that composed the membranes and the operational conditions applied in the permeation of hydrogen gas in the found articles. By analyzing the papers, palladium and palladium alloys with an intermediate ceramic layer to compose the membrane support are highlighted. All the analyzed permeation conditions affect the selectivity and permeability, especially the temperature, whose elevation favors permeability but may cause defects in the membrane. With this, this study aims to facilitate the retrieval of original works published in recent years related to the subject, particularly for comparing hydrogen permeation results based on the material the researcher intends to use in preparing their membrane. With this, this study aims to facilitate the retrieval of original works published in recent years related to the subject, particularly for comparing hydrogen permeation results based on the material the researcher intends to use in preparing their membrane. Graphical abstract