The migration behavior of sulfur impurity contained in the dual-phase membrane of Ce0.9Gd0.1O2−δ–SrCo0.8Fe0.1Nb0.1O3−δ under CO2 atmosphere

Mixed Ionic-Electronic Conducting Membranes (MIEC) for Their Application in Membrane Reactors: A Review

“…It is also worthy to underline that not only the SO 2 coming from the process can affect the membrane performance, but also Sulphur coming from impurities of the raw material in membrane preparation can result in a detrimental effect for the membrane. Wu et al [145] showed that a dual phase membrane Ce 0.9 Gd 0.1 O 2-δ -SrCo 0.8 Fe 0.1 Nb 0.1 O 3-δ prepared with low Sulphur content raw materials present a constant permeation rate of 30 mL min −1 cm −2 in which the permeation is higher than the Ce 0.9 Gd 0.1 O 2-δ -SrCo 0.8 Fe 0.1 Nb 0.1 O 3-δ prepared with high Sulphur content (because of the impurities in the raw material), which contribute to the sulphate formation in the membrane.…”

Towards an atomic scale understanding of the early-stage deterioration mechanism of LSCF

“…10b), 56,66 which is believed to be one pathway for S incorporation. Additionally, some Sr vacancies (Sr v ) are supposed to form in the subsurface aer Sr diffusion onto the surface 40,67 and may be occupied by the nearby La or the neighboring absorbed S aer hopping, 68 which is considered to be another pathway for S incorporation. However, we could not determine which pathway was dominant.…”