Effect of temperature and pressure on the dynamics of nanoconfined propane

Siddharth Gautam, Tingting Liu, Gernot Rother, Niina Jalarvo, Eugene Mamontov, Susan Welch, David Cole

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We report the effect of temperature and pressure on the dynamical properties of propane confined in nanoporous 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 low pressures to jump diffusion at higher pressures has also been observed.

Original languageEnglish
Title of host publicationSolid State Physics - Proceedings of the 58th DAE Solid State Physics Symposium 2013
PublisherAmerican Institute of Physics Inc.
Pages1353-1355
Number of pages3
ISBN (Print)9780735412255
DOIs
StatePublished - 2014
Event58th DAE Solid State Physics Symposium 2013 - Patiala, Punjab, India
Duration: Dec 17 2013Dec 21 2013

Publication series

NameAIP Conference Proceedings
Volume1591
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference58th DAE Solid State Physics Symposium 2013
Country/TerritoryIndia
CityPatiala, Punjab
Period12/17/1312/21/13

Keywords

  • High pressure
  • Motion under confinement
  • Neutron scattering

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