Photocatalytic Hydrogenation of Nitroaromatics to Anilines on Silica-Supported Iron Oxides with Hydrazine Monohydrate as a Reductant

• Shiraishi Yasuhiro

  Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University

• Hirakawa Hiroaki

  Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University

• Hirai Takayuki

  Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University

抄録

Photocatalytic hydrogenation of nitroaromatics was carried out with silica-supported iron oxides (FeO_x/SiO₂) as catalysts and hydrazine monohydrate as a reductant. Photoirradiation of the catalysts at λ>300 nm promotes hydrogenation of nitroaromatics to the corresponding anilines with more than 90% selectivity. The FeO_x/SiO₂ catalysts with lower Fe loadings possess monomeric Fe^III species behaving as the active sites and exhibit higher photocatalytic activity and aniline selectivity. Electron spin resonance (ESR) analysis revealed that photoexcitation of the hydrazine-adsorbed monomeric Fe^III species produces Fe^II species by the reduction with hydrazine. The Fe^II species promote the reduction of nitroaromatics to anilines, along with the Fe^II→Fe^III oxidation.

収録刊行物

• JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

  JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 48 (2), 141-146, 2015

  公益社団法人 化学工学会

キーワード

• Photocatalysis
• Iron Oxides
• Nitroaromatics
• Hydrazine
• Hydrogenation

詳細情報

• CRID: 1390282679546569856
• NII論文ID: 130004862048
• NII書誌ID: AA00709658
• DOI: 10.1252/jcej.14we151
• ISSN: 18811299
• ISSN: 00219592
• NDL書誌ID: 026286593
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026286593
• Web Site: https://www.jstage.jst.go.jp/article/jcej/48/2/48_14we151/_pdf
• 本文言語コード: en
• データソース種別:
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