Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7717050 | International Journal of Hydrogen Energy | 2015 | 7 Pages |
Abstract
Pd0.77Ag0.23 alloy foil of thickness â¼100 μm was prepared by arc melting followed by cold rolling and annealing. The X-ray diffraction pattern confirmed the formation of solid solution phase and the TXRF analysis confirmed the composition as Pd0.77Ag0.23. Hydrogen/deuterium equilibrium pressure-composition-temperature (PCT) relationships for this alloy were experimentally generated over the temperature range of 374-419 K using Sieverts' type volumetric apparatus. Thermodynamic parameters like enthalpy and entropy of hydrogen/deuterium desorption reaction were evaluated from PCT data. Kinetics of hydrogen/deuterium absorption for this thin alloy foil was also investigated in the temperature range of 335-394 K using the same apparatus and activation energies of hydrogen/deuterium absorption reactions were evaluated. Both thermodynamic and kinetic data showed pronounced positive isotope effect in the temperature and pressure range of investigation.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
N.S. Anand, Subhasis Pati, Ram Avtar Jat, S.C. Parida, S.K. Mukerjee,