Structure and liquid fragility in sodium carbonate

WILSON, Mark, RIBEIRO, Mauro C. C., WILDING, Martin, BENMORE, Chris, WEBER, J. K. R., ALDERMAN, Oliver, TAMALONIS, Anthony and PARISE, J. B. (2017). Structure and liquid fragility in sodium carbonate. The Journal of Physical Chemistry A, 122 (4), 1071-1076. [Article]

Abstract
The relationship between local structure and dynamics is explored for molten sodium carbonate. A flexible fluctuating-charge model, which allows for changes in the shape and charge distribution of the carbonate molecular anion, is developed. The system shows the evolution of highly temperature-dependent complex low-dimensional structures which control the dynamics (and hence the liquid fragility). By varying the molecular anion charge distribution, the key interactions responsible for the formation of these structures can be identified and rationalized. An increase in the mean charge separation within the carbonate ions increases the connectivity of the emerging structures and leads to an increase in the system fragility.
More Information
Metrics

Altmetric Badge

Dimensions Badge

Share
Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email

Actions (login required)

View Item View Item