Details
| Translated title of the contribution | Eine zweiphasige Keramikmembran mit extrem hohem Wasserstoff-Fluss durch Entmischung einer keramischen Vorstufe |
|---|---|
| Original language | English |
| Pages (from-to) | 10895-10898 |
| Number of pages | 4 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 55 |
| Issue number | 36 |
| Early online date | 27 Jul 2016 |
| Publication status | Published - 26 Aug 2016 |
Abstract
A novel concept for the preparation of multiphase composite ceramics based on demixing of a single ceramic precursor has been developed and used for the synthesis of a dual-phase H2-permeable ceramic membrane. The precursor BaCe0.5Fe0.5O3−δdecomposes on calcination at 1370 °C for 10 h into two thermodynamically stable oxides with perovskite structures: the cerium-rich oxide BaCe0.85Fe0.15O3−δ(BCF8515) and the iron-rich oxide BaCe0.15Fe0.85O3−δ(BCF1585), 50 mol % each. In the resulting dual-phase material, the orthorhombic perovskite BCF8515 acts as the main proton conductor and the cubic perovskite BCF1585 as the main electron conductor. The dual-phase membrane shows an extremely high H2permeation flux of 0.76 mL min−1cm−2at 950 °C with 1.0 mm thickness. This auto-demixing concept should be applicable to the synthesis of other ionic-electronic conducting ceramics.
Keywords
- ceramic membranes, dual-phase composites, electron conductors, hydrogen permeation, proton conductors
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- General Chemistry
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In: Angewandte Chemie - International Edition, Vol. 55, No. 36, 26.08.2016, p. 10895-10898.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A Dual-Phase Ceramic Membrane with Extremely High H2Permeation Flux Prepared by Autoseparation of a Ceramic Precursor
AU - Cheng, Shunfan
AU - Wang, Yanjie
AU - Zhuang, Libin
AU - Xue, Jian
AU - Wei, Yanying
AU - Feldhoff, Armin
AU - Caro, Jürgen
AU - Wang, Haihui
PY - 2016/8/26
Y1 - 2016/8/26
N2 - A novel concept for the preparation of multiphase composite ceramics based on demixing of a single ceramic precursor has been developed and used for the synthesis of a dual-phase H2-permeable ceramic membrane. The precursor BaCe0.5Fe0.5O3−δdecomposes on calcination at 1370 °C for 10 h into two thermodynamically stable oxides with perovskite structures: the cerium-rich oxide BaCe0.85Fe0.15O3−δ(BCF8515) and the iron-rich oxide BaCe0.15Fe0.85O3−δ(BCF1585), 50 mol % each. In the resulting dual-phase material, the orthorhombic perovskite BCF8515 acts as the main proton conductor and the cubic perovskite BCF1585 as the main electron conductor. The dual-phase membrane shows an extremely high H2permeation flux of 0.76 mL min−1cm−2at 950 °C with 1.0 mm thickness. This auto-demixing concept should be applicable to the synthesis of other ionic-electronic conducting ceramics.
AB - A novel concept for the preparation of multiphase composite ceramics based on demixing of a single ceramic precursor has been developed and used for the synthesis of a dual-phase H2-permeable ceramic membrane. The precursor BaCe0.5Fe0.5O3−δdecomposes on calcination at 1370 °C for 10 h into two thermodynamically stable oxides with perovskite structures: the cerium-rich oxide BaCe0.85Fe0.15O3−δ(BCF8515) and the iron-rich oxide BaCe0.15Fe0.85O3−δ(BCF1585), 50 mol % each. In the resulting dual-phase material, the orthorhombic perovskite BCF8515 acts as the main proton conductor and the cubic perovskite BCF1585 as the main electron conductor. The dual-phase membrane shows an extremely high H2permeation flux of 0.76 mL min−1cm−2at 950 °C with 1.0 mm thickness. This auto-demixing concept should be applicable to the synthesis of other ionic-electronic conducting ceramics.
KW - ceramic membranes
KW - dual-phase composites
KW - electron conductors
KW - hydrogen permeation
KW - proton conductors
UR - http://www.scopus.com/inward/record.url?scp=84979743404&partnerID=8YFLogxK
U2 - 10.1002/anie.201604035
DO - 10.1002/anie.201604035
M3 - Article
AN - SCOPUS:84979743404
VL - 55
SP - 10895
EP - 10898
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 36
ER -