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@ARTICLE{Lermontov:842523,
      author       = {Lermontov, S. A. and Malkova, A. N. and Sipyagina, N. A.
                      and Yorov, Kh. E. and Kopitsa, G. P. and Baranchikov, A. E.
                      and Ivanov, V. K. and Pipich, V. and Szekely, Noemi},
      title        = {{C}omparative analysis of the physicochemical
                      characteristics of {S}i{O}2 aerogels prepared by drying
                      under subcritical and supercritical conditions},
      journal      = {Inorganic materials},
      volume       = {53},
      number       = {12},
      issn         = {1608-3172},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2018-00747},
      pages        = {1270 - 1278},
      year         = {2017},
      abstract     = {SiO2-based aerogels have been produced be removing a
                      solvent (ethanol or hexafluoroisopropanol) from lyogels both
                      above and below the critical temperature of the alcohols (in
                      the range 210–260 and 160–220°C, respectively). The
                      resultant materials have been characterized by
                      low-temperature nitrogen adsorption measurements, X-ray
                      diffraction, thermal analysis, scanning electron microscopy,
                      X-ray microanalysis, and small-angle and ultrasmall-angle
                      neutron scattering. The results demonstrate that removing
                      the solvent 20–30°C below the critical temperature of the
                      solvent yields silica that is characterized by higher
                      specific porosity and has the same or a larger specific
                      surface area in comparison with the aerogels produced by
                      drying under supercritical conditions. The nature of the
                      solvent used and the solvent removal temperature influence
                      the size and aggregation behavior of primary clusters and
                      the cluster aggregate size in the aerogels.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101 / EXP:(DE-MLZ)KWS3-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000415763400008},
      doi          = {10.1134/S002016851712007X},
      url          = {https://juser.fz-juelich.de/record/842523},
}