THERMODYNAMIC CHARACTERIZATION OF (NB1-XFEX)(1-X)CR-X-H SYSTEMS

Authors
ESAYED AY NORTHWOOD DO
Citation
Ay. Esayed et Do. Northwood, THERMODYNAMIC CHARACTERIZATION OF (NB1-XFEX)(1-X)CR-X-H SYSTEMS, International journal of hydrogen energy, 20(11), 1995, pp. 893-896
Citations number
11
Categorie Soggetti
Energy & Fuels","Environmental Sciences","Physics, Atomic, Molecular & Chemical
Journal title
International journal of hydrogen energy → ACNP
ISSN journal
03603199
Volume
20
Issue
11
Year of publication
1995
Pages
893 - 896
Database
ISI
SICI code
0360-3199(1995)20:11<893:TCO(S>2.0.ZU;2-C
Abstract
Pressure-composition isotherms for hydrogen absorption and desorption are determined for (Nb1-xFex)(1-x)Cr-x alloys (x = 0.05, 0.07) over th e temperature range 298-353 K. Pronounced hysteresis was observed at a ll temperatures. The average enthalpies ([H]/[M] = 0.2-0.7) for hydrid e formation are -14.9 and -145.4 kJ (mol H)(-1) and for hydride decomp osition are 33.6 and 33.4 kJ (mol H)(-1) for x-values of 0.05 and 0.07 , respectively.