Decomposition of nonafluoropentanoic acid by heteropolyacid photocatalyst H3PW12O40 in aqueous solution

被引：42

作者：

Hori, H ^{[1
]}

Hayakawa, E ^{[1
]}

Koike, K ^{[1
]}

Einaga, H ^{[1
]}

Ibusuki, T ^{[1
]}

机构：

[1] AIST, Tsukuba, Ibaraki 3058569, Japan

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2004年 / 211卷 / 1-2期

基金：

日本学术振兴会;

关键词：

perfluorinated acid; fluorine; heteropolyacid; water; photocatalyst;

D O I：

10.1016/j.molcata.2003.09.029

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nonafluoropentanoic acid (C4F9COOH; NFPA), which is a typical perfluorinated acid, was decomposed to F- and CO2 with a water-soluble tungstic heteropolyacid photocatalyst, H3PW12O40. The catalytic reaction proceeded in water at room temperature under UV-Vis irradiation in the presence of oxygen. The reaction system produced no trace of environmentally undesirable species, such as CF4 and CF3H. In addition to F- ions, a small amount of a one-CF2-unit-shortened species, heptafluorobutyric acid (C3F7COOH; HFBA), was formed. The reaction mechanism involves precomplexation between [PW12O40](3-) and NFPA and subsequent redox reactions. (C) 2003 Elsevier B.V. All rights reserved.

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收藏

页码：35 / 41

页数：7

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