Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/2096
Title: Beneficial effects of substituting trivalent ions in the B-site of La(0.5)Sr(0.5)Mn(1-x)A(x)O(3) (A = Al, Ga, Sc) on the thermochemical generation of CO and H-2 from CO2 and H2O
Authors: Dey, Sunita
Naidu, B. S.
Rao, C. N. R.
Keywords: Chemistry
Lanthanum Manganite Perovskites
Oxide Fuel-Cells
Water-Splitting Cycles
Hydrogen-Production
Oxygen Nonstoichiometry
Solid-Solutions
Solar Hydrogen
2-Step
Sr
Mn
Issue Date: 2016
Publisher: Royal Society of Chemistry
Citation: Dey, S.; Naidu, B. S.; Rao, C. N. R., Beneficial effects of substituting trivalent ions in the B-site of La(0.5)Sr(0.5)Mn(1-x)A(x)O(3) (A = Al, Ga, Sc) on the thermochemical generation of CO and H-2 from CO2 and H2O. Dalton Transactions 2016, 45 (6), 2430-2435 http://dx.doi.org/10.1039/c5dt04822b
Dalton Transactions
45
6
Abstract: The effect of substitution of Al3+, Ga3+ and Sc3+ ions in the Mn3+ site of La0.5Sr0.5MnO3 on the thermochemical splitting of CO2 to generate CO has been studied in detail. Both La0.5Sr0.5Mn1-xGaxO3 and La0.5Sr0.5Mn1-xScxO3 give high yields of O-2 and generate CO more efficiently than La0.5Sr0.5Mn1-xAlxO3 or the parent La0.5Sr0.5MnO3. Substitution of even 5% Sc3+ (x = 0.05) results in a remarkable improvement in performance. Thus La0.5Sr0.5Mn0.95-Sc0.05O3 produces 417 mu mol g(-1) of O-2 and 545 mu mol g(-1) of CO, respectively, i.e. 2 and 1.7 times more O-2 and CO than La0.5Sr0.5MnO3. This manganite also generates H-2 satisfactorily by the thermochemical splitting of H2O.
Description: Open Access (Accepted Manuscript)
URI: http://hdl.handle.net/10572/2096
ISSN: 1477-9226
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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