Catalytic properties of iron oxides. II. Isotopic exchange of oxygen, oxidation of carbon monoxide, and reduction-oxidation mechanism.

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概要

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• The reactivity and mobility of the lattice oxygen of iron oxide, in particular γ-Fe<SUB>2</SUB>O<SUB>3</SUB>, has been investigated by <SUP>18</SUP>O-exchange with CO<SUB>2</SUB> and CO oxidation by <SUP>18</SUP>O<SUB>2</SUB>. The low mobility of the lattice oxygen is in agreement with the reduction-oxidation mechanism of γ-Fe<SUB>2</SUB>O<SUB>3</SUB> bulk, which proceeds by Fe ion migration without diffusion of the lattice oxygen. The rapid diffusion of the Fe ion makes the redox cycles of γ-Fe<SUB>2</SUB>O<SUB>3</SUB> easy and explains, together with the cation deficient structure, the high reactivity and selectivity of lattice oxygen. Thus, γ-Fe<SUB>2</SUB>O<SUB>3</SUB>may be regarded as a new prototype of selective catalyst for allylic oxidation.

• 公益社団法人 日本化学会の論文

著者

• Yoneda Yukio

  Department Of Molecular Pharmacology Kanazawa University Faculty Of Pharmaceutical Sciences

• Ueda Fumio

  Department Of Orthopaedic Surgery Nagoya City University Medical School

• Misono Makoto

  Department Of Applied Chemistry Faculty Of Engineering The University Of Tokyo

• Sakata Kanji

  Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo

• Ueda Fumio

  Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo

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