Effect of temperature and pressure on the dynamics of nanoconfined propane Conference Paper uri icon

DCO ID 11121/2850-1928-9909-7226-CC

is Contribution to the DCO

  • NO

year of publication

  • 2014

abstract

  • We report the effect of temperature and pressure on the dynamical properties of propane confined innanoporous silica aerogel studied using quasielastic neutron scattering (QENS). Our results demonstrate that the effect of a change in the pressure dominates over the effect of temperature variation on the dynamics of propane nano-confined in silica aerogel. At low pressures, most of the propane molecules are strongly bound to the pore walls, only a small fraction is mobile. As the pressure is increased, the fraction of mobile molecules increases. A change in the mechanism of motion, from continuous diffusion at lowpressures to jump diffusion at higher pressures has also been observed.


     

volume

  • 1353