TY  - JOUR
AU  - Seeger, J.
AU  - Ivanova, Mariya
AU  - Meulenberg, W. A.
AU  - Sebold, D.
AU  - Stöver, D.
AU  - Scherb, T.
AU  - Schumacher, G.
AU  - Escolástico, S.
AU  - Solís, C.
AU  - Serra, J. M.
TI  - Synthesis and Characterization of Nonsubstituted and Substituted Proton-Conducting La6−xWO12−y
JO  - Inorganic chemistry
VL  - 52
IS  - 18
SN  - 0020-1669
CY  - Washington, DC
PB  - American Chemical Society
M1  - FZJ-2013-06125
SP  - 10375−10386
PY  - 2013
AB  - Mixed proton−electron conductors (MPEC) can be used as gas separation membranes to extract hydrogen from a gas stream, for example, in a power plant. From the different MPEC, the ceramic material lanthanum tungstate
AB  - presents an important mixed protonic−electronic conductivity. Lanthanum tungstate La6−xWO12−y (with y = 1.5x + δ and x =0.5−0.8) compounds were prepared with La/W ratios between 4.8 and 6.0 and sintered at temperatures between 1300 and 1500 °C in order to study the dependence of the single-phase formation region on the La/W ratio and temperature.
AB  - Furthermore, compounds substituted in the La or W position were prepared. Ce, Nd, Tb, and Y were used for partial substitution at the La site, while Ir, Re, and Mo were applied for W substitution. All substituents were applied in different concentrations. The electrical conductivity of nonsubstituted La6−xWO12−y and for all substituted La6−xWO12−y compounds was measured in the temperature range of 400−900 °C in wet
AB  - (2.5% H2O) and dry mixtures of 4% H2 in Ar. The greatest improvement in the electrical characteristics was found in the case of 20 mol % substitution with both Re and Mo. After treatment in 100% H2 at 800 °C, the compounds remained unchanged as confirmed with XRD, Raman, and SEM.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000330098300023
C6  - pmid:24000891
DO  - DOI:10.1021/ic401104m
UR  - https://juser.fz-juelich.de/record/140888
ER  -