Absorption isotherms deuterium

Deuterium absorption isotherms were determined similarly for TiMo. The temperature range examined was the same as that for hydrogen absorption, but the range of deuterium contents was significantly smaller, extending only to D/M zz 0.01. The data are presented in Figure 6. It is evident that Sieverts Law is... 

Figure 6. Deuterium absorption isotherms exhibited by TiMo over the temperature range 590.4°-395.2°C. Data are presented as F1/2(mm Hg)1/2 vs. deuterium-to-metal atom ratio X I03.

Figure 16. Hydrogen and deuterium absorption isotherms (40°C) for vanadium...

Figure 7.1 demonstrates the importance of using compressibility in the calculation of hydrogen uptake at even modest pressures by contrasting the calculated absorption isotherms for the LaNi5-D2 system at room temperature with and without correction for the deuterium compressibility. Even at pressures of a few bar the error is significant over the breadth of the absorption plateau. Once pressures of several hundred bar are reached, the uncorrected isotherm is completely misleading. 

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