Relationship between the Surface Property of Alumina and the Coordination Number of Al

Takeshi TSUCHIDA; Hiroto TACHIKAWA

doi:10.1380/jsssj.14.272

アルミナにおけるAlの配位数と表面性質の関連について

土田猛, 田地川浩人

著者情報

ジャーナルフリー

1993 年 14 巻 5 号 p. 272-277

DOI https://doi.org/10.1380/jsssj.14.272

詳細

発行日: 1993/07/10 受付日: 1993/02/08 J-STAGE公開日: 2009/08/07 受理日: 1993/04/12 早期公開日: - 改訂日: -
訂正情報
訂正日: 2009/08/07 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : α-Al₂O₃ having a high specific surface area of 72m²/g was first prepared by the thermal decomposition of diaspore at 530°C. However, its catalytic activity for isomerization of 1-butene was not recognized at all. On the contrary, γ-Al₂O₃ showed a conversion rate of ca. 70% despite its lower specific surface area of 55 m²/g compared with that of α-Al₂O₃. These findings indicate that the difference in the catalytic activity between γ-and α-Al₂O₃ is attributable not to the specific surface area, but to the coordination number of Al ions. Thus it was proved experimentally for the first time that octahedral Al sites in alumina are inactive for isomerization of 1-butene. A quantum-chemical study using an ab-initio MO method on the surface structure and electronic states of γ-Al₂O₃ explained satisfactorily the lower activity of octahedral Al sites compared with tetrahedral ones.
Right : α-Al₂O₃ having a high specific surface area of 72m²/g was first prepared by the thermal decomposition of diaspore at 530°C. However, its catalytic activity for isomerization of 1-butene was not recognized at all. On the contrary, γ-Al₂O₃ showed a conversion rate of ca. 70% despite its lower specific surface area of 55 m²/g compared with that of α-Al₂O₃. These findings indicate that the difference in the catalytic activity between γ-and α-Al₂O₃ is attributable not to the specific surface area, but to the coordination number of Al ions. Thus it was proved experimentally for the first time that octahedral Al sites in alumina are inactive for isomerization of 1-butene. A quantum-chemical study using an ab-initio MO method on the surface structure and electronic states of γ-Al₂O₃ explained satisfactorily the lower activity of octahedral Al sites compared with tetrahedral ones.

訂正日: 2009/08/07 訂正理由: - 訂正箇所: 引用文献情報訂正内容: Wrong : 1) S. G. Hindin and S. W. Weller : J. Phys. Chem. 61, 1506 (1956).
2) J. B. Pen: J. Phys. Chem. 69, 220 (1965).
3) H. Knözinger and P. Ratnasamy : Catal. Rev. -SCI. Eng. 17, 31 (1978).
4) G. D. Gatta, B. Fubini and L. Stradella : J. Chem. Soc., Faraday Trans. II 73, 1040 (1977).
5) G. D. Gatta, B. Fubini, G. Ghiotti and C. Morterra : J. Cat. 43, 90 (1976).
6) C. Morterra, S. Coluccia, E. Garrone and G. Ghiotti : J. Chem. Soc., Faraday Trans. I 75, 289 (1979).
7) P. Nortier and P. Fourre : Applied Catal. 61, 141 (1990).
8) P. Ya. Gokhberg, A. 0. Litinskii, A. P. Khardin, V. M. Lazauskas and A. V. Berzhyunas: Kinetics and Catalysis 21, 669 (1980).
9) H. Kawakami and S. Yoshida : J. Chem. Soc., Faraday Trans. 2 81, 1117, 1129 (1985) ; ibid. 82, 1385 (1986).
10) M. B. Fleisher, L. D. Golender and M. V. Shimanshaya : J. Chem. Soc., Faraday Trans. 87, 745 (1991).
11) T. Tsuchida and K. Kodaira : J. Mat. Sci. 25, 4423 (1990).
12) A. F. Wells: “Structural Inorganic Chemistry” (Clarendon Press, Oxford, 1975) p. 528.
13) C. S. John, N. C. M. Alma and G. R. Hays : Applied Catalysis 6, 341 (1983).
14) T. Tsuchida : Solid State Ionics, in press.

Right : 1) S. G. Hindin and S. W. Weller : J. Phys. Chem. 61, 1506 (1956).
2) J. B. Pen: J. Phys. Chem. 69, 220 (1965).
3) H. Knözinger and P. Ratnasamy : Catal. Rev. -SCI. Eng. 17, 31 (1978).
4) G. D. Gatta, B. Fubini and L. Stradella : J. Chem. Soc., Faraday Trans. II 73, 1040 (1977).
5) G. D. Gatta, B. Fubini, G. Ghiotti and C. Morterra : J. Cat. 43, 90 (1976).
6) C. Morterra, S. Coluccia, E. Garrone and G. Ghiotti : J. Chem. Soc., Faraday Trans. I 75, 289 (1979).
7) P. Nortier and P. Fourre : Applied Catal. 61, 141 (1990).
8) P. Ya. Gokhberg, A. 0. Litinskii, A. P. Khardin, V. M. Lazauskas and A. V. Berzhyunas: Kinetics and Catalysis 21, 669 (1980).
9) H. Kawakami and S. Yoshida : J. Chem. Soc., Faraday Trans. 2 81, 1117, 1129 (1985) ; ibid. 82, 1385 (1986).
10) M. B. Fleisher, L. D. Golender and M. V. Shimanshaya : J. Chem. Soc., Faraday Trans. 87, 745 (1991).
11) T. Tsuchida and K. Kodaira : J. Mat. Sci. 25, 4423 (1990).
12) A. F. Wells: “Structural Inorganic Chemistry” (Clarendon Press, Oxford, 1975) p. 528.
13) C. S. John, N. C. M. Alma and G. R. Hays : Applied Catalysis 6, 341 (1983).
14) T. Tsuchida : Solid State Ionics, in press.

抄録

α-Al₂O₃ having a high specific surface area of 72m²/g was first prepared by the thermal decomposition of diaspore at 530°C. However, its catalytic activity for isomerization of 1-butene was not recognized at all. On the contrary, γ-Al₂O₃ showed a conversion rate of ca. 70% despite its lower specific surface area of 55 m²/g compared with that of α-Al₂O₃. These findings indicate that the difference in the catalytic activity between γ-and α-Al₂O₃ is attributable not to the specific surface area, but to the coordination number of Al ions. Thus it was proved experimentally for the first time that octahedral Al sites in alumina are inactive for isomerization of 1-butene. A quantum-chemical study using an ab-initio MO method on the surface structure and electronic states of γ-Al₂O₃ explained satisfactorily the lower activity of octahedral Al sites compared with tetrahedral ones.

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