Energetics of bulk lutetium‐doped Ce 1−x Lu x O 2−x/2 compounds
Abstract
Abstract The dissolution enthalpy , Δ H DS , and the formation enthalpy, Δ H f,ox , of bulk lutetium‐doped cerium oxide (LuDC) were studied at 701°C in molten sodium molybdate. For the composition range of Ce 1− X Lu X O 2− X /2 , studied 0 ≤ X ≤ 0.3, the Δ H DS decreases linearly and smoothly with lutetium content according to Δ H DS , kJ/mol = 73.5(1.0)−165.1(5.5)· x ). The enthalpy of formation, Δ H f,ox , becomes more exothermic linearly with lutetium content. No anomaly in Δ H f,ox is observed at low Lu 2 O 3 concentration as reported previously for several other rare‐earth‐doped ceria systems, suggesting possible differences in clustering and microstructure, which may also be related to difference in processing conditions.
- Authors:
-
[1];
[2];
[4]
- Department of Materials and Interfaces Weizmann Institute of Science Rehovot Israel
- Peter A. Rock Thermochemistry Laboratory NEAT‐ORU University of California Davis Davis California
- Applied Research Center Ben Gurion University of the Negev Beer Sheva Israel
- Peter A. Rock Thermochemistry Laboratory NEAT‐ORU University of California Davis Davis California, Department of Materials Nuclear Research Center Beer Sheva Israel
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1422636
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Journal of the American Ceramic Society
- Additional Journal Information:
- Journal Name: Journal of the American Ceramic Society Journal Volume: 101 Journal Issue: 8; Journal ID: ISSN 0002-7820
- Publisher:
- Wiley-Blackwell
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Yavo, Nimrod, Sharma, Geetu, Kimmel, Giora, Lubomirsky, Igor, Navrotsky, Alexandra, and Yeheskel, Ori. Energetics of bulk lutetium‐doped Ce 1−x Lu x O 2−x/2 compounds. United States: N. p., 2018.
Web. doi:10.1111/jace.15489.
Yavo, Nimrod, Sharma, Geetu, Kimmel, Giora, Lubomirsky, Igor, Navrotsky, Alexandra, & Yeheskel, Ori. Energetics of bulk lutetium‐doped Ce 1−x Lu x O 2−x/2 compounds. United States. https://doi.org/10.1111/jace.15489
Yavo, Nimrod, Sharma, Geetu, Kimmel, Giora, Lubomirsky, Igor, Navrotsky, Alexandra, and Yeheskel, Ori. Mon .
"Energetics of bulk lutetium‐doped Ce 1−x Lu x O 2−x/2 compounds". United States. https://doi.org/10.1111/jace.15489.
@article{osti_1422636,
title = {Energetics of bulk lutetium‐doped Ce 1−x Lu x O 2−x/2 compounds},
author = {Yavo, Nimrod and Sharma, Geetu and Kimmel, Giora and Lubomirsky, Igor and Navrotsky, Alexandra and Yeheskel, Ori},
abstractNote = {Abstract The dissolution enthalpy , Δ H DS , and the formation enthalpy, Δ H f,ox , of bulk lutetium‐doped cerium oxide (LuDC) were studied at 701°C in molten sodium molybdate. For the composition range of Ce 1− X Lu X O 2− X /2 , studied 0 ≤ X ≤ 0.3, the Δ H DS decreases linearly and smoothly with lutetium content according to Δ H DS , kJ/mol = 73.5(1.0)−165.1(5.5)· x ). The enthalpy of formation, Δ H f,ox , becomes more exothermic linearly with lutetium content. No anomaly in Δ H f,ox is observed at low Lu 2 O 3 concentration as reported previously for several other rare‐earth‐doped ceria systems, suggesting possible differences in clustering and microstructure, which may also be related to difference in processing conditions.},
doi = {10.1111/jace.15489},
journal = {Journal of the American Ceramic Society},
number = 8,
volume = 101,
place = {United States},
year = {Mon Feb 26 00:00:00 EST 2018},
month = {Mon Feb 26 00:00:00 EST 2018}
}
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