Hydrides ScFe(Ni)(2)H-x: preparation and properties

The interaction of the intermetallic compounds ScFe2 and ScNi2 with ammonia was investigated at an initial pressure of ammonia of 0.6-0.8 MPa in the p resence of 10 mass% (from the quantity of intermetallide entered in reactio n) of NH4Cl as a process activator. The possibility of obtaining both cryst alline hydrides of the intermetallic compounds and amorphous products of a reaction in a high-dispersed state was shown at various temperatures. It ha s been established that the decomposition of the intermetallides in ammonia cal medium occurs at greater than or equal to 450 degreesC. (C) 2001 Intern ational Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.