Ba effect in doped Sr(Co0.8Fe0.2)O3-δ on the phase structure and oxygen permeation properties of the dense ceramic membranes

Experimental and modeling studies on Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) tubular membranes for air separation

“…Detail information for the preparation of BSCF oxide powder can be found in reference [18]. The membrane tube was prepared by the plastic extrusion method [21].…”

“…It was found that the BSCF membrane possesses good phase stability and excellent oxygen permeability [18]. It can be operated steadily for more than 1000 h for oxygen permeation with helium sweeping and used for the conversion of light hydrocarbons [19][20][21][22].…”

Dense ceramic oxygen permeable membranes and catalytic membrane reactors

“…Co 3+ and Fe 3+ to the higher valence states Co 4+ and Fe 4+ . With 30% doping content of Ba, the oxygen permeation flux could be increased up to about 1.19 ml/cm 2 min at 850°C with an 1.5 mm-disk membrane [19]. The life time test of the oxygen permeation through the BSCF membrane was also studied.…”

Electrical conductivity and defect chemistry of $$ {\hbox{B}}{{\hbox{a}}_x}{\hbox{S}}{{\hbox{r}}_{{1} - x}}{\hbox{C}}{{\hbox{o}}_y}{\hbox{F}}{{\hbox{e}}_{{1} - y}}{{\hbox{O}}_{{3} - \delta }} $$ perovskites

“…Materials like lanthanum manganite [2], lanthanum cobaltite [3], strontium-doped lanthanum manganite [4], strontium-and cobalt-doped lanthanum ferrite [5,6], and strontium-doped samarium cobaltite [7] have been widely studied as SOFC cathodes as well as for catalysis [8]. In addition, Ba 0:5 Sr 0:5 Co 0:8 Fe 0:2 O 3Àd was reported first in 2000 as an oxygen permeation membrane material [9] by Shao et al, who also reported Ba 0:3 Sr 0:7 Co 0:8 Fe 0:2 O 3Àd to exhibit the highest oxygen permeability in the Ba x Sr 1Àx Co 0:8 Fe 0:2 O 3Àd family [10]. This composition was reported as a possible novel high-performance cathode material with low polarization resistance in the intermediate temperature range 500-700°C [11].…”