Liquidus Temperature for Methanol-Water Mixtures at High Pressure and Low Temperature, With Application to Titan
Abstract
Methanol is a potentially important impurity in subsurface oceans on Titan and Enceladus. We report measurements of the freezing of methanol‐water samples at pressures up to 350 MPa using a volumetric cell with sapphire windows. For low concentrations of methanol, the liquidus temperature is typically a few degrees below the corresponding ice freezing point, while at high concentrations it follows the pure methanol trend. In the Ice‐III regime, we observe several long‐lived metastable states. The results suggest that methanol is a more effective antifreeze than previously estimated and might have played an important role in the development of Titan's subsurface ocean.
Additional Information
© 2018 American Geophysical Union. Received 31 MAY 2018; Accepted 6 NOV 2018; Accepted article online 9 NOV 2018; Published online 3 DEC 2018. Financial support was provided by Lafayette College. Data used in the figures are available at https://data.mendeley.com/datasets/fwpf6t3bxn/1. The authors thank D. L. Hogenboom for assistance in building the pressure system.Attached Files
Published - Dougherty_et_al-2018-Journal_of_Geophysical_Research__Planets.pdf
Files
Name | Size | Download all |
---|---|---|
md5:79b281f4aaf2cc1f4b9cd4fe681babc8
|
955.1 kB | Preview Download |
Additional details
- Eprint ID
- 92560
- Resolver ID
- CaltechAUTHORS:20190201-104529901
- Lafayette College
- Created
-
2019-02-01Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field