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Title: High thermal stability of La 2O 3 and CeO 2-stabilized tetragonal ZrO 2

Catalyst support materials of tetragonal ZrO 2, stabilized by either La 2O 3 (La 2O 3-ZrO 2) or CeO 2 (CeO 2-ZrO 2), were synthesized under hydrothermal conditions at 200 °C with NH 4OH or tetramethylammonium hydroxide as the mineralizer. From In Situ synchrotron powder X-ray diffraction and small-angle X-ray scattering measurements, the calcined La 2O 3-ZrO 2 and CeO 2-ZrO 2 supports were nonporous nanocrystallites that exhibited rectangular shapes with thermal stability up to 1000 °C in air. These supports had an average size of ~10 nm and a surface area of 59-97 m 2/g. The catalysts Pt/La 2O 3-ZrO 2 and Pt/CeO 2-ZrO 2 were prepared by using atomic layer deposition with varying Pt loadings from 6.3-12.4 wt %. Mono-dispersed Pt nanoparticles of ~3 nm were obtained for these catalysts. As a result, the incorporation of La 2O 3 and CeO 2 into the t-ZrO 2 structure did not affect the nature of the active sites for the Pt/ZrO 2 catalysts for the water-gas-shift (WGS) reaction.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [3] ;  [2] ;  [2] ;  [2] ;  [2]
  1. Northwestern Univ., Evanston, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Purdue Univ., West Lafayette, IN (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Inorganic Chemistry
Additional Journal Information:
Journal Volume: 55; Journal Issue: 5; Journal ID: ISSN 0020-1669
Publisher:
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; ALD; La2O3; CeO2; hydrothermal; stabilized; tetragonal ZrO2; water-gas-shift
OSTI Identifier:
1241300

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, and Marshall, Christopher L.. High thermal stability of La2O3 and CeO2-stabilized tetragonal ZrO2. United States: N. p., Web. doi:10.1021/acs.inorgchem.5b02810.
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.. High thermal stability of La2O3 and CeO2-stabilized tetragonal ZrO2. United States. doi:10.1021/acs.inorgchem.5b02810.
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, and Marshall, Christopher L.. 2016. "High thermal stability of La2O3 and CeO2-stabilized tetragonal ZrO2". United States. doi:10.1021/acs.inorgchem.5b02810. https://www.osti.gov/servlets/purl/1241300.
@article{osti_1241300,
title = {High thermal stability of La2O3 and CeO2-stabilized tetragonal ZrO2},
author = {Wang, Shichao and Xie, Hong and Lin, Yuyuan and Poeppelmeier, Kenneth R. and Li, Tao and Winans, Randall E. and Cui, Yanran and Ribeiro, Fabio H. and Canlas, Christian P. and Elam, Jeffrey W. and Zhang, Hongbo and Marshall, Christopher L.},
abstractNote = {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 thermal stability 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 6.3-12.4 wt %. Mono-dispersed Pt nanoparticles of ~3 nm were obtained for these catalysts. As a result, 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 (WGS) reaction.},
doi = {10.1021/acs.inorgchem.5b02810},
journal = {Inorganic Chemistry},
number = 5,
volume = 55,
place = {United States},
year = {2016},
month = {2}
}