High Thermal Stability of La2O3- and CeO2-Stabilized Tetragonal ZrO2

Shichao Wang; Hong Xie; Yuyuan Lin; Kenneth R. Poeppelmeier; Tao Li; Randall E. Winans; Yanran Cui; Fabio H. Ribeiro; Christian P. Canlas; Jeffrey W. Elam; Hongbo Zhang; Christopher L. Marshall

doi:10.1021/acs.inorgchem.5b02810

High Thermal Stability of La₂O₃- and CeO₂-Stabilized Tetragonal ZrO₂

Shichao Wang, Hong Xie, Yuyuan Lin, Kenneth R. Poeppelmeier, Tao Li, Randall E. Winans, Yanran Cui, Fabio H. Ribeiro, Christian P. Canlas, Jeffrey W. Elam, Hongbo Zhang, Christopher L. Marshall

Northwestern University

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

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	https://doi.org/10.1021/acs.inorgchem.5b02810
Publication status	Published - Mar 7 2016

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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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 › peer-review

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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.",

author = "Shichao Wang and Hong Xie and Yuyuan Lin and Poeppelmeier, {Kenneth R.} and Tao Li and Winans, {Randall E.} and Yanran Cui and Ribeiro, {Fabio H.} and Canlas, {Christian P.} and Elam, {Jeffrey W.} and Hongbo Zhang and Marshall, {Christopher L.}",

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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.

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High Thermal Stability of La₂O₃- and CeO₂-Stabilized Tetragonal ZrO₂

Abstract

ASJC Scopus subject areas

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