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Hydrogen uptake by barium manganite at atmospheric pressure

Mandal, Tapas Kumar and Sebastian, Litty and Gopalakrishnan, J and Abrams, Lloyd and Goodenough, JB (2004) Hydrogen uptake by barium manganite at atmospheric pressure. In: Materials Research Bulletin, 39 (14-15). pp. 2257-2264.

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Official URL: http://dx.doi.org/10.1016/j.materresbull.2004.08.0...

Abstract

Investigation of the interaction of hydrogen with alkaline earth manganites (IV) $AMnO_{3}$ (A = Ca, Sr, Ba), dispersed with 1 at.% Pt, has revealed an unprecedented uptake of hydrogen by $BaMnO_{3}/Pt$ to the extent of similar to 1.25 mass% at moderate temperatures (190-260 degreesC) and ambient pressure. Gravimetric sorption isotherms and mass spectrometric analysis of the desorption products indicate that approximately three hydrogen atoms per mol of $BaMnO_{3}/Pt$ is inserted reversibly. The nature of hydrogen in the insertion product, $BaMnO_{3}H_{3}$,is discussed. The work suggests the possibility of developing new hydrogen storage materials based on electropositive metal-transitionmetal-oxide systems.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Elsevier Science.
Keywords: A. Oxides;A. Hydrides;C. Thermogravimetric analysis (TGA)
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 29 Mar 2005
Last Modified: 23 Feb 2012 06:00
URI: http://eprints.iisc.ernet.in/id/eprint/2970

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