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@ARTICLE{Gautam:255678,
      author       = {Gautam, Siddharth and Liu, Tingting and Rother, Gernot and
                      Jalarvo, Niina and Mamontov, Eugene and Welch, Susan and
                      Sheets, Julie and Droege, Michael and Cole, David R.},
      title        = {{D}ynamics of {P}ropane in {N}anoporous {S}ilica {A}erogel:
                      {A} {Q}uasielastic {N}eutron {S}cattering {S}tudy},
      journal      = {The journal of physical chemistry / C},
      volume       = {119},
      number       = {32},
      issn         = {1932-7455},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2015-05811},
      pages        = {18188 - 18195},
      year         = {2015},
      abstract     = {Molecular motion of hydrocarbons under confinement exhibits
                      several peculiarities and has important implications in
                      industries like gas recovery. A quasielastic neutron
                      scattering (QENS) study of the dynamics of propane in
                      nanoporous silica aerogel was carried out to quantify its
                      molecular mobility. The dynamical properties of propane were
                      studied as a function of temperature, pressure and presence
                      of CO2. The effects of pressure, i.e., fluid density and
                      composition, are found to be more pronounced than the
                      effects of temperature. At low pressures of propane, many
                      propane molecules are adsorbed onto the pore surfaces and
                      are thus immobile. As the pressure of propane loading is
                      increased, more molecules become available to take part in
                      the diffusional dynamics and thus enhance the diffusivity.
                      At low pressure the propane molecules take part in a
                      continuous diffusion, while at higher pressures, the
                      diffusion of propane molecules within the aerogel occurs via
                      the mechanism of jumps. Presence of CO2 enhances the jump
                      rate of propane molecules, thereby increasing the diffusion
                      coefficient. This study aims to aid in understanding the
                      complex processes involved in hydrocarbon migration in
                      porous quartz-rich rocks and enhanced hydrocarbon recovery.},
      cin          = {ICS-1 / Neutronenstreuung ; JCNS-1 / JCNS-SNS},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106 /
                      I:(DE-Juel1)JCNS-SNS-20110128},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551) /
                      6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
      pid          = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
                      G:(DE-HGF)POF3-6215},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000359683800020},
      doi          = {10.1021/acs.jpcc.5b03444},
      url          = {https://juser.fz-juelich.de/record/255678},
}