Gross, Thomas and Chen, Liuping and Buchhauser, Johannes and Luedemann, Hans-Dietrich (2001) T,p-Dependence of intradiffusion in binary fluid mixtures with ammonia as one component. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 3 (17). pp. 3701-3706. ISSN 1463-9076
Full text not available from this repository.Abstract
Intradiffusion coefficients D-ii were measured for four binary systems with ammonia as one component by the pulsed field gradient NMR technique. The second components are: benzene, acetonitrile, I-pentanol and methanol. The studies are limited at the low temperature side by the onset of crystallisation. They are extended to a maximum pressure of 200 MPa. The concentration dependence of D-ii in the mixtures containing methanol, shows at constant T and p at lower temperatures a pronounced minimum in the D-ii vs. x curves. This minimum becomes deeper with increasing pressure. This can only be explained by the formation of transient hydrogen bonded networks in which the ammonia molecules participate as donors and acceptors. The data for the ammonia/methanol system are analysed by the mode coupling- and the VTF-models. Both show significant anomalies in the mole fraction range of ammonia x(NH3) approximate to 0.7.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SELF-DIFFUSION; DENSITY-DEPENDENCE; WATER MIXTURES; LIQUIDS; ACETONITRILE; TEMPERATURE; |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Biophysik und physikalische Biochemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Mar 2022 06:35 |
| Last Modified: | 08 Mar 2022 06:35 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41941 |
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