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.

PDF A39Copy_of_revised-manuscript.pdf - Published Version Restricted to Registered users only Download (699kB) | Request a copy

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
Publication:	Materials Research Bulletin
Publisher:	Elsevier Science
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.ac.in/id/eprint/2970

Actions (login required)

View Item