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Ce 3+ -enriched spherical porous ceria with an enhanced oxygen storage capacity.
- Source :
-
RSC advances [RSC Adv] 2021 Feb 01; Vol. 11 (10), pp. 5609-5617. Date of Electronic Publication: 2021 Feb 01 (Print Publication: 2021). - Publication Year :
- 2021
-
Abstract
- Porous ceria was obtained using a unique solvothermal reaction in acetonitrile, applying high temperature and pressure. The resulting material comprised homogeneous and monodisperse spheres and exhibited an extremely large surface area of 152 m <superscript>2</superscript> g <superscript>-1</superscript> . From catalytic performance evaluation by vapor- and liquid-phase reactions, the synthesized porous ceria showed superior and different reaction activity compared with commercial CeO <subscript>2</subscript> . To examine the origin of the reaction activity of the present porous ceria, synchrotron hard X-ray photoelectron spectroscopy (HAXPES) measurements were carried out. The systematic study of HAXPES measurements revealed that the obtained porous ceria with the present solvothermal method contained a very high concentration of Ce <superscript>3+</superscript> . Moreover, O <subscript>2</subscript> -pulse adsorption analyses demonstrated a significant oxygen adsorption capacity exceeding 268 μmol-O g <superscript>-1</superscript> at 400 °C owing to its high contents of Ce <superscript>3+</superscript> species.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)
Details
- Language :
- English
- ISSN :
- 2046-2069
- Volume :
- 11
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- RSC advances
- Publication Type :
- Academic Journal
- Accession number :
- 35423111
- Full Text :
- https://doi.org/10.1039/d0ra10186a