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AuthorBhosale R.R.
AuthorTakalkar G.D.
Available date2020-03-03T06:19:01Z
Publication Date2018
Publication NameCeramics International
ResourceScopus
ISSN2728842
URIhttp://dx.doi.org/10.1016/j.ceramint.2018.06.096
URIhttp://hdl.handle.net/10576/13077
AbstractThe influence of lanthanide metal cations doped into the CeO2 crystal structure (to form Ce0.9Ln0.1O2; Ln = La, Pr, Nd, Sm, Gd, Tb, Dy, or Er) on thermochemical reduction and the CO2 splitting ability of Ce0.9Ln0.1O2 is scrutinized using thermogravimetric analysis. Ce0.9Ln0.1O2 redox materials are effectively synthesized by co-precipitation of hydroxides. As-synthesized Ce0.9Ln0.1O2 redox materials are further characterized based on their phase composition, crystallite size, surface area, and morphology using powder X-ray diffraction, Brunauer-Emmett-Teller surface area analysis, and scanning electron microscopy. The thermal reduction and CO2 splitting aptitude of Ce0.9Ln0.1O2 redox materials are examined by performing 10 consecutive thermochemical cycles. The results imply that insertion of Sm3+, Er3+, Tb3+, Dy3+, and La+3 in place of Ce4+ in the fluorite crystal structure of CeO2 (forming Ce0.9Ln0.1O2) enhances the O2 liberation by 22.5, 14.6, 12.6, 5.85, and 2.96 ?mol O2/g?cycle, respectively. Besides, CeLa is observed to be more active towards the CO2 splitting reaction than CeO2 and the other Ce0.9Ln0.1O2 redox materials investigated in this study.
SponsorThis publication was made possible by the NPRP grant ( NPRP8-370-2-154 ) from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of author(s).
Languageen
PublisherElsevier Ltd
SubjectCe0.9Ln0.1O2
Ceria
Co-precipitation
CO2 splitting
Lanthanides
Thermochemical cycles
TitleNanostructured co-precipitated Ce0.9Ln0.1O2 (Ln = La, Pr, Sm, Nd, Gd, Tb, Dy, or Er) for thermochemical conversion of CO2
TypeArticle
Pagination16688 - 16697
Issue Number14
Volume Number44
dc.accessType Abstract Only


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