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Author Ishiyama, T. ♦ Kishimoto, H. ♦ Develos-Bagarinao, K. ♦ Yamaji, K. ♦ Yamaguchi, T. ♦ Fujishiro, Y.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ BARIUM ♦ DISSOCIATION ♦ DOPED MATERIALS ♦ FOURIER TRANSFORM SPECTROMETERS ♦ HEAVY WATER ♦ INFRARED SPECTRA ♦ IONS ♦ PROTONS ♦ TEMPERATURE DEPENDENCE ♦ TEMPERATURE RANGE 0400-1000 K ♦ YTTRIUM OXIDES ♦ ZIRCONATES
Abstract The dissociation behavior of protons incorporated in yttrium-doped barium zirconate (BZY20) was investigated via combination of in-situ diffuse reflectance Fourier transform infrared spectroscopy (FT-IR) and evolved gas analysis. The vicinities of dopant or host ions were considered as sites of proton dissolution. The temperature dependence of the dissociation of protons from each site was evaluated. Protons which were considered to have dissolved in the vicinity of dopant ions were easily removed and dissociated as water. On the other hand, those which dissolved in the vicinity of host ions were dissociated as hydrogen at high temperatures. Such dissociation behavior was also detected after using D{sub 2}O saturated gas for pre-treatment. These results suggest that some protons which dissolved in the perovskite oxide could dissociate as hydrogen without forming oxygen vacancies. (131words) - Graphical abstract: Different dissociation reactions of protons from yttria doped barium zirconate.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-08-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 252


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