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@ARTICLE{Mascotto:87684,
      author       = {Mascotto, S. and Wallacher, D. and Brandt, A. and Hauss, T.
                      and Thommes, M. and Zickler, G. A. and Funari, S. S. and
                      Timmann, A. and Smarsly, B. M. and DESY},
      title        = {{A}nalysis of {M}icroporosity in {O}rdered {M}esoporous
                      {H}ierarchically {S}tructured {S}ilica by {C}ombining
                      {P}hysisorption {W}ith in-situ {S}mall-{A}ngle {S}cattering
                      ({SAXS} and {SANS})},
      journal      = {Langmuir},
      volume       = {25},
      issn         = {0743-7463},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {PHPPUBDB-10458},
      pages        = {12670-12681},
      year         = {2009},
      abstract     = {The combination of physisorption experiments with
                      simultaneous in situ small-angle X-ray and neutron
                      scattering (SAXS/SANS) was used to elucidate the porosity in
                      mesoporous silica with a trimodal pore structure. The
                      material ("KLE-IL") contains spherical mesopores of 14 nm in
                      diameter, worm-like mesopores (2-3 nm), and micropores,
                      templated by a block copolymer and an ionic liquid
                      surfactant, while the micropores originate from the
                      hydrophilic block of the block copolymer. The main objective
                      of the study was the quantification of the microporosity and
                      the small mesopores and to find out if they are indeed
                      located between the larger, spherical mesopores. Our in situ
                      SAXS/SANS experiments took advantage of contrast matching of
                      nitrogen (SANS, T = 77 K) and dibromomethane (SAXS, T = 290
                      K). By using the latter gas with a slightly larger kinetic
                      diameter, it was possible to judge the accessibility of the
                      pores under ambient conditions. The in situ experiments were
                      supported by high-precision ex situ physisorption. Using
                      suitable approaches for the SAXS/SANS analysis, it was
                      possible to separate the content of the micropores and small
                      mesopores.},
      keywords     = {Scattering, Radiation / Silicon Dioxide: chemistry /
                      Silicon Dioxide (NLM Chemicals)},
      cin          = {HASYLAB},
      ddc          = {670},
      cid          = {$I:(DE-H253)HASYLAB_-2012_-20130307$},
      pnm          = {DORIS Beamline BW4 (POF1-550) / DORIS Beamline A2
                      (POF1-550) / FS-Proposal: II-20070030 EC (II-20070030-EC)},
      pid          = {G:(DE-H253)POF1-BW4-20130405 / G:(DE-H253)POF1-A2-20130405
                      / G:(DE-H253)II-20070030-EC},
      experiment   = {EXP:(DE-H253)D-BW4-20150101 / EXP:(DE-H253)D-A2-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:19821588},
      UT           = {WOS:000271106600041},
      doi          = {10.1021/la9013619},
      url          = {https://bib-pubdb1.desy.de/record/87684},
}