Key properties of mixed cerium and zirconium microspheres prepared by the internal gelation process with previously boiled HMTA and urea
Abstract
The internal gelation process using previously boiled hexamethylenetetramine-urea was used in exploratory study to produce CeO2–ZrO2 microspheres, which can serve as a simulant for ceramic transuranic fuel particles and as a viable three-way catalyst. The calcined CeO2 and ZrO2 microspheres with Barrett–Joyner–Halenda (BJH) pore size and volumes of 8–10 nm and 0.19–0.20 mL/g, respectively, had many more surface cracks than their relatively smooth CeO2–ZrO2 counterparts even though the BJH pore sizes and volumes of mixed oxide spheres were lower at 3 nm and 0.11–0.12 mL/g, respectively. The Brunauer–Emmett–Teller (BET) surface areas for the CeO2 and ZrO2 microspheres were 74 and 93 m2/g, respectively, and the BET surface areas for the mixed oxides were much greater at 155–158 m2/g, which should improve catalytic performance. Overall, the catalytic activity of each microsphere composition was confirmed through the oxidation of carbon monoxide.
- Authors:
-
[1];
[1];
[2]
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- LG Chem, Daejeon (South Korea)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1814386
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Ceramics International
- Additional Journal Information:
- Journal Volume: 47; Journal Issue: 16; Journal ID: ISSN 0272-8842
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; CeO2-ZrO2 microspheres; transuranic simulant; three-way catalyst
Citation Formats
Hunt, Rodney Dale, Collins, Jack Lee, and Choi, Jae-Soon. Key properties of mixed cerium and zirconium microspheres prepared by the internal gelation process with previously boiled HMTA and urea. United States: N. p., 2021.
Web. doi:10.1016/j.ceramint.2021.05.042.
Hunt, Rodney Dale, Collins, Jack Lee, & Choi, Jae-Soon. Key properties of mixed cerium and zirconium microspheres prepared by the internal gelation process with previously boiled HMTA and urea. United States. https://doi.org/10.1016/j.ceramint.2021.05.042
Hunt, Rodney Dale, Collins, Jack Lee, and Choi, Jae-Soon. Sun .
"Key properties of mixed cerium and zirconium microspheres prepared by the internal gelation process with previously boiled HMTA and urea". United States. https://doi.org/10.1016/j.ceramint.2021.05.042. https://www.osti.gov/servlets/purl/1814386.
@article{osti_1814386,
title = {Key properties of mixed cerium and zirconium microspheres prepared by the internal gelation process with previously boiled HMTA and urea},
author = {Hunt, Rodney Dale and Collins, Jack Lee and Choi, Jae-Soon},
abstractNote = {The internal gelation process using previously boiled hexamethylenetetramine-urea was used in exploratory study to produce CeO2–ZrO2 microspheres, which can serve as a simulant for ceramic transuranic fuel particles and as a viable three-way catalyst. The calcined CeO2 and ZrO2 microspheres with Barrett–Joyner–Halenda (BJH) pore size and volumes of 8–10 nm and 0.19–0.20 mL/g, respectively, had many more surface cracks than their relatively smooth CeO2–ZrO2 counterparts even though the BJH pore sizes and volumes of mixed oxide spheres were lower at 3 nm and 0.11–0.12 mL/g, respectively. The Brunauer–Emmett–Teller (BET) surface areas for the CeO2 and ZrO2 microspheres were 74 and 93 m2/g, respectively, and the BET surface areas for the mixed oxides were much greater at 155–158 m2/g, which should improve catalytic performance. Overall, the catalytic activity of each microsphere composition was confirmed through the oxidation of carbon monoxide.},
doi = {10.1016/j.ceramint.2021.05.042},
journal = {Ceramics International},
number = 16,
volume = 47,
place = {United States},
year = {Sun May 09 00:00:00 EDT 2021},
month = {Sun May 09 00:00:00 EDT 2021}
}
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