Enthalpy of Metal-Hydrogen Systems: A Pair-Bond Model
A model is developed that takes into account the variation in pair-bond energy as the interatomic distances vary with hydrogen content in metal-hydrogen (M-H) systems. It is observed that the general behavior of the relative partial molar enthalpy of hydrogen, ΔHH, is that ΔHH vs x (where x = H/M) tends to exhibit a minimum. This is accounted for by the model as due to the generality of the existence of a repulsive MH interaction and an anti-bonding HH interaction.
KeywordsInteraction Energy Metal Hydride Invariant Interaction Relative Partial Molar Enthalpy Dilational Force
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