Hydrogen component fugacity in binary mixtures with carbon monoxide: Temperature dependence

Bruno, Thomas J.; Schroeder, Johann O.

doi:10.1007/bf00503151

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…In principle, the measurements of hydrogen fugacity in H 2 –CO mixtures of varying compositions by Bruno and Schroeder 14 from 403 K to 463 K could yield B 12 . However, our analysis of these measurements found widely different B 12 at different compositions, which is unphysical and indicates that these data are not precise enough to use for the purpose of deriving B 12 .…”

Section: Resultsmentioning

confidence: 99%

All-dimensional H2–CO potential: Validation with fully quantum second virial coefficients

Garberoglio

Jankowski

Szalewicz

et al. 2017

The Journal of Chemical Physics

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We use a new high-accuracy all-dimensional potential to compute the cross second virial coefficient B12(T) between molecular hydrogen and carbon monoxide. The path-integral method is used to fully account for quantum effects. Values are calculated from 10 K to 2000 K and the uncertainty of the potential is propagated into uncertainties of B12. Our calculated B12(T) are in excellent agreement with most of the limited experimental data available, but cover a much wider range of temperatures and have lower uncertainties. Similar to recently reported findings from scattering calculations, we find that the reduced-dimensionality potential obtained by averaging over the rovibrational motion of the monomers gives results that are a good approximation to those obtained when flexibility is fully taken into account. Also, the four-dimensional approximation with monomers taken at their vibrationally averaged bond lengths works well. This finding is important, since full-dimensional potentials are difficult to develop even for triatomic monomers and are not currently possible to obtain for larger molecules. Likewise, most types of accurate quantum mechanical calculations, e.g., spectral or scattering, are severely limited in the number of dimensions that can be handled.

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Section: Resultsmentioning

confidence: 99%