Catalytic activity of V-Sn oxides for oxidation reactions.
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概要
- 論文の詳細を見る
The rate of oxidation of C<SUB>3</SUB>H<SUB>6</SUB>, C<SUB>2</SUB>H<SUB>4</SUB>, C<SUB>3</SUB>H<SUB>8</SUB>, and CO has been investigated over V–Sn oxides of various compositions. The rate shows two maxima at V–Sn(V/Sn=2/1) and (1/8) oxides. Comparison between the rate of reduction of the oxides with C<SUB>3</SUB>H<SUB>6</SUB> and that of the corresponding catalytic oxidation suggests that the oxygen species responsible for oxidation differs for V–Sn(2/1) and V–Sn(1/8) oxides. The amount of oxygen desorbed in the temperature range 400–530 °C varies with the composition of the V–Sn oxides, showing a maximum at V–Sn(2/1) oxide. With V–Sn(1/8) oxide, little or no oxygen desorption is observed. On the basis of these results together with those of structural studies, it is concluded that the rate maximum with V–Sn(2/1) oxide arises from formation of an amorphous material from which lattice oxygen is easily released, while the rate maximum with V–Sn(1/8) oxide is associated with the presence of V<SUP>4+</SUP> ions dissolved in SnO<SUB>2</SUB>.
- 公益社団法人 日本化学会の論文
著者
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Ono Takehiko
Department Of Applied Chemistry Graduate School Of Engineering Osaka Prefecture University
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Nakagawa Yoshiro
Department Of Electrical Engineering Faculty Of Engineering Osaka City University
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Kubokawa Yutaka
Department of Applied Chemistry College of Engineering University of Osaka Prefecture
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Nakagawa Yoshiro
Department of Applied Chemistry, University of Osaka Prefecture
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