Rare Earth Tungstate: One Competitive Proton Conducting Material Used for Hydrogen Separation: A Review

Membrane technology is an advanced hydrogen separation method that is of great significance in achieving hydrogen economy. Rare earth tungstate membranes have both high hydrogen permeability and remarkable mechanical/chemical stability, exhibiting good application prospects in hydrogen separation. This review provides the basic aspects and research progress on rare earth tungstate hydrogen separation membranes. The crystal structure, proton transport properties, and membrane stability under a chemical atmosphere are introduced. Different membrane construction designs, such as single-phase, dual-phase, and asymmetric rare earth tungstate membranes, are summarized. Lastly, the existing problems and development suggestions for tungstate membranes are discussed.

Automated summary

Membrane technology is an advanced method for hydrogen separation that plays a significant role in achieving the hydrogen economy. Rare earth tungstate membranes, with their high hydrogen permeability and exceptional mechanical/chemical stability, have promising applications in hydrogen separation. This review provides an overview of the basic aspects and research progress of rare earth tungstate hydrogen separation membranes, including their crystal structure, proton transport properties, and membrane stability in a chemical atmosphere. Different membrane construction designs, such as single-phase, dual-phase, and asymmetric rare earth tungstate membranes, are also summarized. Lastly, the review discusses the current problems and offers development suggestions for tungstate membranes.