Oxygen permeability and stability of dual-phase Ce0.85Pr0.15O2--Pr0.6Sr0.4Fe0.9Al0.1O3- membrane for hydrogen production by water splitting

Dual-phase Ce0.8Sm0.2O2−δ–La0.8Ca0.2Al0.3Fe0.7O3−δ oxygen permeation hollow fiber membrane for oxy-CO2 reforming of methane

“…For MIEC oxygen permeable membranes, the oxygen permeation flux increases several times usually when the sweep gas was changed from inert gas to reducing gas, and this phenomenon has been reported in many studies. 29,58–60…”

“…For MIEC oxygen permeable membranes, the oxygen permeation flux increases several times usually when the sweep gas was changed from inert gas to reducing gas, and this phenomenon has been reported in many studies. 29,[58][59][60] The oxygen flux varied linearly with the air feed because almost all of the oxygen permeated to the CH 4 side and consumed by CH 4 , H 2 and CO; hence, pure N 2 remained. According to the GC analysis results, N 2 was not detected in…”

A review of water splitting via mixed ionic–electronic conducting (MIEC) membrane reactors

“…3(a). The results showed that the thermochemical stability gradually improved with the increase of the CP content, and 60CP-40PSFA displayed the best balance giving a production rate of 0.99 mL cm −2 min −1 and a stability of 100 h. 65 With an increase of the CP content, bulk diffusion resistance and surface exchange resistances both decreased first and then increased (Fig. 3(b)).…”

“…So far, most membrane materials cannot meet such stringent requirements as commonly used perovskite oxides would have reactions with H 2 , CO 2 , SO 2 or water vapor. 25 On the other hand, dual-phase MIEC materials composed of zirconia-type fluorites demonstrated improved stability, such as YSZ-LSCF 54 and CP-PSFA, 65 the perovskite oxide phase of which is still a concern. There are many reasons for the problematic stability of MIEC membranes, the first being thermal expansion and chemical expansion.…”

Water interaction with B-site (B = Al, Zr, Nb, and W) doped SrFeO3−δ-based perovskite surfaces for thermochemical water splitting applications

“…[8][9][10][11] Among them, the use of oxygen transport membrane technology for hydrogen production by water splitting has been intensively studied by researchers in recent years. [12][13][14] It is based on the concept of continuously splitting water to produce hydrogen through a mixed ionic-electronic conductor (MIEC) oxygen transport membrane (OTM). The selection of an appropriate oxygen exchange material (OEM) is the key to the application of TWS, and an OTM reactor based on an OEM has the advantage of integrated reaction and separation, thereby simplifying the chemical processes by coupling the oxygen-supply, oxygen-separation, and oxygen-consumption reactions into a single unit.…”