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Equilibrium Pressure of Protium and Deuterium over Vanadium Dihydride Phase

  • A. N. Golubkov
  • A. A. Yukhimchuk
Chapter
Part of the NATO Science Series book series (NAII, volume 71)

Abstract

Equilibrium pressure of sorption and desorption have been measured over vanadium hydride of the composition VX0,8-2,0 where X is H2, D2 or their mixture. The work has been done using electrolytic vanadium VEL — 2. Temperature dependencies of desorption equilibrium pressures for vanadium hydride VX1,0-1,9 in a pressure range 1 — 550 bar were found to be : 1g P(atm.) = -2085/T + 7,5 and 1g P(atm.) = -2454/T + 8,2 for protium and deuterium, respectively. Temperature dependence of pressure, obtained for mixtures H2 and D2, are between those found for pure D2 and H2 but shifted toward dependence for D2. Based on the found dependencies, the enthalpy of relevant vanadium dihydride phases generation was calculated.

Keywords

Separation Factor Hydrogen Isotope Equilibrium Pressure Metal Hydride Hydride Formation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations

P

pressure

T

temperarure

C

concentration

a.r.

atomic ratio

• H

enthalpy of the vanadium dihydride phase formation

• S

entropy of the vanadium dihydride phase formation

α

separation factor

PH2

are equilibrium pressures of protium in the area of “plateau” over vanadium hydride

PH2

are equilibrium pressures of deuterium in the area of “plateau” over vanadium deuteride

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Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • A. N. Golubkov
    • 1
  • A. A. Yukhimchuk
    • 1
  1. 1.Russian Federal Nuclear Center — All — Russian Research Institute of Experimental PhysicsSarovRussia

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