Efficient and selective photocatalytic cyclohexane oxidation on a layered titanate modified with iron oxide under sunlight and CO 2 atmosphere

Hideya Hattori, Yusuke Ide, Shuhei Ogo, Kei Inumaru, Masahiro Sadakane, Tsuneji Sano

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Layered titanates modified with molecular level iron oxide were synthesized by a reaction between K 0.7Ti 1.73Li 0.27O 4 and Fe(III) acetylacetonate complex using the dodecylammonium- exchanged layered titanate as intermediate. The iron oxide-modified layered titanates were used as catalysts for selective oxidation of cyclohexane with molecular oxygen under sunlight irradiation. The catalysts produced cyclohexanone and cyclohexanol with high selectivity up to 100% and showed cyclohexane conversion comparable to that obtained over a commercially available TiO 2 (P25), depending on the amount of the attached iron oxide. The results were explained by the molecular recognitive cyclohexane adsorption ability of the catalysts, that is, the inhibition of the successive oxidation of the formed products. The cyclohexane conversion over the iron oxide-modified layered titanates was substantially improved with 100% selectivity maintained by conducting the reaction under a CO 2 atmosphere.

Original languageEnglish
Pages (from-to)1910-1915
Number of pages6
JournalACS Catalysis
Volume2
Issue number9
DOIs
Publication statusPublished - 2012 Sep 7
Externally publishedYes

Fingerprint

Carbon Monoxide
Cyclohexane
Iron oxides
Oxidation
Catalysts
Cyclohexanols
Molecular oxygen
Catalyst selectivity
Irradiation
Adsorption
ferric oxide

Keywords

  • cyclohexane
  • iron oxide
  • layered titanate
  • photocatalysis
  • sunlight

ASJC Scopus subject areas

  • Catalysis

Cite this

Efficient and selective photocatalytic cyclohexane oxidation on a layered titanate modified with iron oxide under sunlight and CO 2 atmosphere. / Hattori, Hideya; Ide, Yusuke; Ogo, Shuhei; Inumaru, Kei; Sadakane, Masahiro; Sano, Tsuneji.

In: ACS Catalysis, Vol. 2, No. 9, 07.09.2012, p. 1910-1915.

Research output: Contribution to journalArticle

Hattori, Hideya ; Ide, Yusuke ; Ogo, Shuhei ; Inumaru, Kei ; Sadakane, Masahiro ; Sano, Tsuneji. / Efficient and selective photocatalytic cyclohexane oxidation on a layered titanate modified with iron oxide under sunlight and CO 2 atmosphere. In: ACS Catalysis. 2012 ; Vol. 2, No. 9. pp. 1910-1915.
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AU - Inumaru, Kei

AU - Sadakane, Masahiro

AU - Sano, Tsuneji

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N2 - Layered titanates modified with molecular level iron oxide were synthesized by a reaction between K 0.7Ti 1.73Li 0.27O 4 and Fe(III) acetylacetonate complex using the dodecylammonium- exchanged layered titanate as intermediate. The iron oxide-modified layered titanates were used as catalysts for selective oxidation of cyclohexane with molecular oxygen under sunlight irradiation. The catalysts produced cyclohexanone and cyclohexanol with high selectivity up to 100% and showed cyclohexane conversion comparable to that obtained over a commercially available TiO 2 (P25), depending on the amount of the attached iron oxide. The results were explained by the molecular recognitive cyclohexane adsorption ability of the catalysts, that is, the inhibition of the successive oxidation of the formed products. The cyclohexane conversion over the iron oxide-modified layered titanates was substantially improved with 100% selectivity maintained by conducting the reaction under a CO 2 atmosphere.

AB - Layered titanates modified with molecular level iron oxide were synthesized by a reaction between K 0.7Ti 1.73Li 0.27O 4 and Fe(III) acetylacetonate complex using the dodecylammonium- exchanged layered titanate as intermediate. The iron oxide-modified layered titanates were used as catalysts for selective oxidation of cyclohexane with molecular oxygen under sunlight irradiation. The catalysts produced cyclohexanone and cyclohexanol with high selectivity up to 100% and showed cyclohexane conversion comparable to that obtained over a commercially available TiO 2 (P25), depending on the amount of the attached iron oxide. The results were explained by the molecular recognitive cyclohexane adsorption ability of the catalysts, that is, the inhibition of the successive oxidation of the formed products. The cyclohexane conversion over the iron oxide-modified layered titanates was substantially improved with 100% selectivity maintained by conducting the reaction under a CO 2 atmosphere.

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