Inorganic membranes for hydrogen production and purification: A critical review and perspective

Preparation of Hydrogen Permeable Membrane Using Nanoparticles Electrophoresis Technique

“…However the permeance of our membranes was two or three orders of magnitude higher than typical one of capillary transport. Based on these findings, it is concluded that the gas permeation in this membrane follows the Knudsen diffusion [1,3], although we could not rule out capillary transport mechanism completely.…”

“…Stable supply of pure hydrogen is indispensable for practical uses of fuel cells, which are one of the most promising solutions to energy and environmental problems [1]. To produce large amounts of hydrogen, improving the performance of hydrogen perm-selective membrane is crucial and urgent.…”

Introduction – A Review of Membrane Reactors

“…Moreover, as previously said, the most useful membranes offering a complete hydrogen permselectivity are the dense palladium-based ones (Lu 2007). The transport mechanism related to the hydrogen permeation through a dense Pd-based membrane is the solution/diffusion (Ward 1999).…”

“…In the last decades, membrane catalysis has been studied by several research and the significant progress in this field is summarized in several review articles (Armor 1998, Lin 2001, Lu 2007, Mcleary 2006, Sanchez 2002, Saracco 1994, Shu 1991.…”

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

“…Moreover, their hydrogen permeability increases with the percentage of Ag in the alloy up to a maximum, which occurs at around 23 wt% Ag. [114] One of the most relevant problems that Pd and Pd-alloy membranes suffer from is CO poisoning, which can be avoided by operating at temperatures above 250 • C. Pd-Ag membranes are most commonly used in MRs…”