Hydrogen Production by Water Dissociation Using Mixed Conducting Membranes

Water dissociates into oxygen and hydrogen at high temperatures. The problem with exploiting this reaction is that very low concentrations of hydrogen and oxygen are generated even at relatively high temperatures (e.g., only 0.1 and 0.042% for hydrogen and oxygen, respectively, at 1 600°C), because the equilibrium constant for this reaction is small. However, significant amounts of hydrogen or oxygen can be generated at moderate temperatures if the equilibrium is shifted toward dissociation by either oxygen or hydrogen removal using a mixedconducting (both electrons and ions) membrane...