Rapid and efficient catalytic oxidation of As(III) with oxygen over a Pt catalyst at increased temperature

Jinxian Zhao, Hideki Matsune, Sakae Takenaka, Masahiro Kishida

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

The pre-oxidation of arsenite (As(III)) to arsenate (As(V)) is a critical step for the removal of toxic arsenic in wastewater. In this work, a Pt catalyst supported on metal oxide was applied to the pre-oxidation step of As(III) without UV irradiation. It is demonstrated that Pt catalyst can effectively promote the oxidation of As(III) using oxygen at neutral pH due to the catalytic activity of Pt itself. The Pt/ZrO2 catalyst possessed excellent stability and could be used repeatedly with high catalytic performance. The oxidation rate of As(III) was structure-insensitive to Pt particle size and obeyed pseudo-first-order kinetics in As(III). The apparent activation energy was about 31.1 kJ/mol, which was obtained on the premise of order of 0.5 with respect to oxygen.

本文言語英語
ページ(範囲)270-278
ページ数9
ジャーナルChemical Engineering Journal
325
DOI
出版ステータス出版済み - 2017

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 環境化学
  • 化学工学(全般)
  • 産業および生産工学

フィンガープリント

「Rapid and efficient catalytic oxidation of As(III) with oxygen over a Pt catalyst at increased temperature」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル