TY - JOUR
T1 - Photochemical decomposition of pentafluoropropionic acid to fluoride ions with a water-soluble heteropolyacid photocatalyst
AU - Hori, Hisao
AU - Takano, Yuko
AU - Koike, Kazuhide
AU - Kutsuna, Shuzo
AU - Einaga, Hisahiro
AU - Ibusuki, Takashi
N1 - Funding Information:
This work was supported in part by a Grant-in-Aid for Scientific Research (no. 15310066) from the Japan Society for the Promotion of Science (JSPS).
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/11/10
Y1 - 2003/11/10
N2 - Pentafluoropropionic acid (CF3CF2COOH; PFPA) was decomposed to F- and CO2 with a water-soluble homogeneous photocatalyst, H3PW12O40. This is the first example of a photocatalytic system for C-F bond cleavage in a perfluorinated acid compound having both CF3- and -CF2- units. The catalytic reaction proceeds in water at room temperature under irradiation with UV-Vis light in the presence of oxygen. Gas chromatography-mass spectrometry (GC-MS) showed no trace of environmentally undesirable species such as CF 4, which is often observed in the decomposition of perfluorinated compounds by extremely high energy techniques such as electron beam irradiation. In addition to F- ions, small amounts of trifluoroacetic acid (TFA) were detected in the reaction solution. The proposed reaction mechanism involves redox reactions of PFPA and TFA with the catalyst.
AB - Pentafluoropropionic acid (CF3CF2COOH; PFPA) was decomposed to F- and CO2 with a water-soluble homogeneous photocatalyst, H3PW12O40. This is the first example of a photocatalytic system for C-F bond cleavage in a perfluorinated acid compound having both CF3- and -CF2- units. The catalytic reaction proceeds in water at room temperature under irradiation with UV-Vis light in the presence of oxygen. Gas chromatography-mass spectrometry (GC-MS) showed no trace of environmentally undesirable species such as CF 4, which is often observed in the decomposition of perfluorinated compounds by extremely high energy techniques such as electron beam irradiation. In addition to F- ions, small amounts of trifluoroacetic acid (TFA) were detected in the reaction solution. The proposed reaction mechanism involves redox reactions of PFPA and TFA with the catalyst.
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U2 - 10.1016/S0926-3373(03)00225-X
DO - 10.1016/S0926-3373(03)00225-X
M3 - Article
AN - SCOPUS:0242370811
SN - 0926-3373
VL - 46
SP - 333
EP - 340
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
IS - 2
ER -