| dc.creator |
Devlin, J. Paul |
|
| dc.creator |
Uras-Aytemiz, Nevin |
|
| dc.date |
2013-07-14T00:00:00Z |
|
| dc.date.accessioned |
2021-12-03T11:31:41Z |
|
| dc.date.available |
2021-12-03T11:31:41Z |
|
| dc.identifier |
881a45a6-c79d-47b6-8536-ff6a598e6fc7 |
|
| dc.identifier |
10.1063/1.4813793 |
|
| dc.identifier |
https://avesis.sdu.edu.tr/publication/details/881a45a6-c79d-47b6-8536-ff6a598e6fc7/oai |
|
| dc.identifier.uri |
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/93149 |
|
| dc.description |
Studies of catalyzed all-vapor gas-hydrate formation on a sub-second timescale have been extended with a special focus on liquid-droplet compositions at the instant of hydrate crystallization. This focus has been enabled by inclusion of methanol in the all-vapor mixture. This slows droplet to gas-hydrate conversion near 200 K to a time scale suited for standard FTIR sampling. Such droplet data are sought as a guide to ongoing efforts to reduce the amount of guest catalyst required for instant formation of the gas hydrates. For the same reason, all-vapor sampling has also been extended to the generation of long-lived liquid droplets with reduced or no water content. Observations of single-solvent droplets show that surprising quantities of gas molecules are trapped during rapid droplet growth. For example, CO2 is trapped at levels near 50 mol. % in droplets of acetone, tetrahydrofuran, or trimethylene oxide formed under CO2 pressures of several Torr in a cold-chamber at 170 K. Less but significant amounts of gas are trapped at higher temperatures, or in methanol or water-methanol droplets. The droplet metastability appears to commonly lead to formation of bubbles larger than the original nanodroplets. Besides serving as a guide for the all-vapor gas-hydrate studies, the semiquantitative evidence of extensive trapping of gases is expected to have a role in future studies of atmospheric aerosols. (C) 2013 AIP Publishing LLC. |
|
| dc.language |
eng |
|
| dc.rights |
info:eu-repo/semantics/closedAccess |
|
| dc.title |
Communication: Fourier-transform infrared probing of remarkable quantities of gas trapped in cold homogeneously nucleated nanodroplets |
|
| dc.type |
info:eu-repo/semantics/article |
|