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| Hauptseite > Publikationsdatenbank > Synthesis and Characterization of Nonsubstituted and Substituted Proton-Conducting La6−xWO12−y > print |
| Hauptseite > Publikationsdatenbank > Synthesis and Characterization of Nonsubstituted and Substituted Proton-Conducting La6−xWO12−y > print |
| 001 | 140888 | ||
| 005 | 20240711085652.0 | ||
| 024 | 7 | _ | |a 10.1021/ic401104m |2 doi |
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| 037 | _ | _ | |a FZJ-2013-06125 |
| 041 | _ | _ | |a English |
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| 100 | 1 | _ | |a Seeger, J. |0 P:(DE-Juel1)128526 |b 0 |u fzj |e Corresponding author |
| 245 | _ | _ | |a Synthesis and Characterization of Nonsubstituted and Substituted Proton-Conducting La6−xWO12−y |
| 260 | _ | _ | |a Washington, DC |c 2013 |b American Chemical Society |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1392806112_23253 |2 PUB:(DE-HGF) |
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| 500 | _ | _ | |3 POF3_Assignment on 2016-02-29 |
| 520 | _ | _ | |a 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
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.
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
(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. |
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| 773 | _ | _ | |a 10.1021/ic401104m |p 10375−10386 |n 18 |0 PERI:(DE-600)1484438-2 |t Inorganic chemistry |v 52 |y 2013 |x 0020-1669 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/140888/files/FZJ-2013-06125.pdf |z Published final document. |y Restricted |
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