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Physico-chemical changes in Ca, Sr and Al-doped La–Mn–O perovskites upon thermochemical splitting of CO2via redox cycling


Gálvez, Maria Elena; Jacot, Roger; Scheffe, Jonathan R; Cooper, Thomas; Patzke, Greta R; Steinfeld, Aldo (2015). Physico-chemical changes in Ca, Sr and Al-doped La–Mn–O perovskites upon thermochemical splitting of CO2via redox cycling. Physical Chemistry Chemical Physics (PCCP), 17(9):6629-6634.

Abstract

Thermochemical CO2-splitting via redox cycling of Ca, Sr and Al-doped La–Mn perovskites induces irreversible changes in the texture and chemical composition of these oxides. Though the crystal structure is mostly preserved after high-temperature redox cycling, the chemical stability is detrimentally affected by sintering and by the formation and eventual segregation of a carbonate phase during oxidation by CO2. Carbonation of the Ca and Sr phase was diminished by Al-substitution of the Mn-cation in the B-position.

Abstract

Thermochemical CO2-splitting via redox cycling of Ca, Sr and Al-doped La–Mn perovskites induces irreversible changes in the texture and chemical composition of these oxides. Though the crystal structure is mostly preserved after high-temperature redox cycling, the chemical stability is detrimentally affected by sintering and by the formation and eventual segregation of a carbonate phase during oxidation by CO2. Carbonation of the Ca and Sr phase was diminished by Al-substitution of the Mn-cation in the B-position.

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Additional indexing

Item Type:Journal Article, refereed, further contribution
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:7 March 2015
Deposited On:18 Jan 2016 15:54
Last Modified:27 May 2017 07:20
Publisher:Royal Society of Chemistry
ISSN:1463-9076
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1039/C4CP05898D

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