ホリ ヒサオ   Hori Hisao
  堀 久男
   所属   神奈川大学  理学部 化学科
   職種   教授
発表年月日 2016/03/26
発表テーマ Efficient Decomposition of a New Fluorochemical Surfactant: Perfluoroalkyl Disulfonate to Fluoride Ions in Subcritical and Supercritical Water
発表学会名 日本化学会第96春季年会
主催者 日本化学会
学会区分 全国学会
発表形式 口頭(一般)
単独共同区分 単独
開催地名 京田辺
発表者・共同発表者 Hisao Hori, Hiroki Saito
概要 Perfluoroalkyl surfactants such as perfluoroalkyl sulfonates (CnF2n+1SO3–) and their derivatives have been used in surface treatment agents, emulsifying agents in polymer synthesis, fire-fighting foams, and so on because of their high surface-active effect, high thermal and chemical stability, and high light transparency. After it became clear that some of them, particularly, perfluorooctane sulfonate (C8F17SO3–, PFOS) persists and bioaccumulates in the environment, international legal measures regarding the production, use, and import and export of PFOS were implemented, and efforts to develop greener alternatives are advancing.Herein we report on the decomposition of a typical perfluoroalkyl disulfonate, –O3SC3F6SO3–, in subcritical and supercritical water, in the presence of an oxidizing agent (O2) or an iron-based reducing agent (zerovalent iron or FeO).