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 2018/11/21
発表テーマ Efficient photochemnical recovery of rhenium from aqueous solutions: A greener approach for rhenium metallurgical processing
発表学会名 The 7th Asia-Oceania Conference on Green and Sustainable Chemistry (AOC7-GSC)
主催者 Institute of Chemical and Engineering Sciences, Institute of Materials Research and Engineering
学会区分 国際学会
発表形式 口頭(一般)
単独共同区分 単独
開催地名 Singapore
発表者・共同発表者 Hisao Hori, Takafumi Otsu
概要 Rhenium, a minor metal in the Earth's crust, is used in superalloys for turbine blades for aircraft and thermal power plants and in petroleum reforming catalysts. Rhenium exists as ReO4- in aqueous solutions, and the recovery of ReO4- from aqueous solutions is difficult because of its low concentration and high solubility at all pH values. We report herein that irradiation of aqueous ReO4- with UV-visible light in the presence of 2-propanol and acetone leads to formation of a precipitate consisting of amorphous ReO2 and ReO3, and that 95% of initial rhenium is recovered within 6 h of irradiation.