Abstract
Catalyst support materials of tetragonal ZrO2, stabilized by either La2O3 (La2O3-ZrO2) or CeO2 (CeO2-ZrO2), were synthesized under hydrothermal conditions at 200°C with NH4OH or tetramethylammonium hydroxide as the mineralizer. From in situ synchrotron powder X-ray diffraction and small-angle X-ray scattering measurements, the calcined La2O3-ZrO2 and CeO2-ZrO2 supports were nonporous nanocrystallites that exhibited rectangular shapes with a thermal stability of up to 1000°C in air. These supports had an average size of 10 nm and a surface area of 59-97 m2/g. The catalysts Pt/La2O3-ZrO2 and Pt/CeO2-ZrO2 were prepared by using atomic layer deposition with varying Pt loadings from 6.3 to 12.4 wt %. Monodispersed Pt nanoparticles of 3 nm were obtained for these catalysts. The incorporation of La2O3 and CeO2 into the t-ZrO2 structure did not affect the nature of the active sites for the Pt/ZrO2 catalysts for the water-gas shift reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 2413-2420 |
| Number of pages | 8 |
| Journal | Inorganic Chemistry |
| Volume | 55 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Mar 7 2016 |
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ASJC Scopus subject areas
- Inorganic Chemistry
- Physical and Theoretical Chemistry
Cite this
High Thermal Stability of La2O3- and CeO2-Stabilized Tetragonal ZrO2 . / Wang, Shichao; Xie, Hong; Lin, Yuyuan; Poeppelmeier, Kenneth R.; Li, Tao; Winans, Randall E.; Cui, Yanran; Ribeiro, Fabio H.; Canlas, Christian P.; Elam, Jeffrey W.; Zhang, Hongbo; Marshall, Christopher L.
In: Inorganic Chemistry, Vol. 55, No. 5, 07.03.2016, p. 2413-2420.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High Thermal Stability of La2O3- and CeO2-Stabilized Tetragonal ZrO2
AU - Wang, Shichao
AU - Xie, Hong
AU - Lin, Yuyuan
AU - Poeppelmeier, Kenneth R.
AU - Li, Tao
AU - Winans, Randall E.
AU - Cui, Yanran
AU - Ribeiro, Fabio H.
AU - Canlas, Christian P.
AU - Elam, Jeffrey W.
AU - Zhang, Hongbo
AU - Marshall, Christopher L.
PY - 2016/3/7
Y1 - 2016/3/7
N2 - Catalyst support materials of tetragonal ZrO2, stabilized by either La2O3 (La2O3-ZrO2) or CeO2 (CeO2-ZrO2), were synthesized under hydrothermal conditions at 200°C with NH4OH or tetramethylammonium hydroxide as the mineralizer. From in situ synchrotron powder X-ray diffraction and small-angle X-ray scattering measurements, the calcined La2O3-ZrO2 and CeO2-ZrO2 supports were nonporous nanocrystallites that exhibited rectangular shapes with a thermal stability of up to 1000°C in air. These supports had an average size of 10 nm and a surface area of 59-97 m2/g. The catalysts Pt/La2O3-ZrO2 and Pt/CeO2-ZrO2 were prepared by using atomic layer deposition with varying Pt loadings from 6.3 to 12.4 wt %. Monodispersed Pt nanoparticles of 3 nm were obtained for these catalysts. The incorporation of La2O3 and CeO2 into the t-ZrO2 structure did not affect the nature of the active sites for the Pt/ZrO2 catalysts for the water-gas shift reaction.
AB - Catalyst support materials of tetragonal ZrO2, stabilized by either La2O3 (La2O3-ZrO2) or CeO2 (CeO2-ZrO2), were synthesized under hydrothermal conditions at 200°C with NH4OH or tetramethylammonium hydroxide as the mineralizer. From in situ synchrotron powder X-ray diffraction and small-angle X-ray scattering measurements, the calcined La2O3-ZrO2 and CeO2-ZrO2 supports were nonporous nanocrystallites that exhibited rectangular shapes with a thermal stability of up to 1000°C in air. These supports had an average size of 10 nm and a surface area of 59-97 m2/g. The catalysts Pt/La2O3-ZrO2 and Pt/CeO2-ZrO2 were prepared by using atomic layer deposition with varying Pt loadings from 6.3 to 12.4 wt %. Monodispersed Pt nanoparticles of 3 nm were obtained for these catalysts. The incorporation of La2O3 and CeO2 into the t-ZrO2 structure did not affect the nature of the active sites for the Pt/ZrO2 catalysts for the water-gas shift reaction.
UR - http://www.scopus.com/inward/record.url?scp=84960354851&partnerID=8YFLogxK
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U2 - 10.1021/acs.inorgchem.5b02810
DO - 10.1021/acs.inorgchem.5b02810
M3 - Article
AN - SCOPUS:84960354851
VL - 55
SP - 2413
EP - 2420
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 5
ER -