THE P,T-DEPENDENCE OF SELF-DIFFUSION IN FLUID AMMONIA

Citation
T. Gross et al., THE P,T-DEPENDENCE OF SELF-DIFFUSION IN FLUID AMMONIA, Journal of molecular liquids, 73-4, 1997, pp. 433-444
Citations number
40
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
ISSN journal
01677322
Volume
73-4
Year of publication
1997
Pages
433 - 444
Database
ISI
SICI code
0167-7322(1997)73-4:<433:TPOSIF>2.0.ZU;2-L
Abstract
Self-diffusion coefficients D for fluid NH3 have been obtained at high pressures by the NMR pulsed field gradient method for the first time between the melting pressure curve and 473 K lit pressures up to 200 M Pa. Compared to H2O and the lower alcohols D of NH3 shows a surprising ly weak T dependence. The data are analyzed in the rough-hard-sphere ( RHS) model. The A-parameter of this model gives no indication for the influence of hydrogen bonding upon the translational dynamics in NH3.