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@ARTICLE{Szreder:863442,
      author       = {Szreder, T. and Schmidt, H. and Modolo, G.},
      title        = {{F}ast radiation-induced reactions in organic phase of
                      {SANEX} system containing {C}y{M}e4-{BTP}hen extracting
                      agent},
      journal      = {Radiation physics and chemistry},
      volume       = {164},
      issn         = {0969-806X},
      address      = {Frankfurt, M.},
      publisher    = {Pergamon Press},
      reportid     = {FZJ-2019-03507},
      pages        = {108356},
      year         = {2019},
      abstract     = {The mechanism of radiation-induced fast reactions occurring
                      in the early stages in the 1-octanol system containing
                      2,9-Bis-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-benzo
                      (Herbst et al., 2011; Nash et al., 2015; Bourg et al.,
                      2015)triazin-3-yl)- (Herbst et al., 2011; Panak and Geist,
                      2013)phenanthroline (CyMe4-BTPhen) extracting agent were
                      studied. This is a simplified model of the r-SANEX organic
                      phase for the selective actinide(III)/lanthanide(III)
                      separation. Effects of various scavengers as well as water
                      content were under consideration. Radiation chemical yield
                      of e−s (G(e−s)) and their molar absorption coefficient
                      (ε(e−s)) in 1-octanol were found to be 130(10) nmol J−1
                      and 18500(700) M−1 cm−1, respectively. Rate constants of
                      e−s reactions with H+, O2, CyMe4-BTPhen and its protonated
                      form were found to be 1.5(3) × 109, 1.0(1) × 1010,
                      1.85(9) × 109, 1.9(6) × 109 M−1 s−1,
                      respectively. The C37 value for scavenging of dry electrons
                      (e−dry) by CyMe4-BTPhen was equal to 30.4(8) mM. Rate
                      constants of H• reactions with CyMe4-BTPhen and its
                      protonated form were found to be < 7.2 × 109 and
                      4.3(9) × 109 M−1 s−1, respectively. A
                      relatively good extraction performance of the system studied
                      under exposition to high radiation doses was explained on
                      the basis of hydroxyloctyl substitution in a phenanthroline
                      aromatic ring.},
      cin          = {IEK-6},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-6-20101013},
      pnm          = {161 - Nuclear Waste Management (POF3-161) / SACSESS -
                      Safety of ACtinide Separation proceSSes (323282)},
      pid          = {G:(DE-HGF)POF3-161 / G:(EU-Grant)323282},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000480377300016},
      doi          = {10.1016/j.radphyschem.2019.108356},
      url          = {https://juser.fz-juelich.de/record/863442},
}