NUCLEATION OF CLATHRATES FROM SUPERCOOLED THF/WATER MIXTURES SHOWS THAT NO MEMORY EFFECT EXISTS

NUCLEATION OF CLATHRATES FROM SUPERCOOLED THF/WATER MIXTURES SHOWS THAT NO MEMORY EFFECT EXISTS

The liquid-to-crystal nucleation temperature is measured for clathrate-forming mixtures of tetrahydrofuran and water using both an automatic lag time apparatus (ALTA) and a ball screening apparatus. Our results are conclusive evidence that no so-called “memory effect” exists. Either the solid form m...

Full description

Bibliographic Details
Main Authors: Wilson, P.W., Haymet, A.D.J., Kozielski, K.A., Hartley, P.G., Becker, N.C.
Language:English
Published: 2008
Subjects:
memory effect
ALTA
tetrahydrofuran
supercooling
ICGH 2008
International Conference on Gas Hydrates 2008
Online Access:http://hdl.handle.net/2429/1169
Description
Summary:The liquid-to-crystal nucleation temperature is measured for clathrate-forming mixtures of tetrahydrofuran and water using both an automatic lag time apparatus (ALTA) and a ball screening apparatus. Our results are conclusive evidence that no so-called “memory effect” exists. Either the solid form melts fully or it does not. If it does not, then no supercooling is possible on the next cooling down of that sample, and if it does then the second cooling run and freezing on a sample is just as likely to have a colder nucleation temperature as a hotter one.

Similar Items