Nature of catalytically active sites over solid acids. II. Relationships between acidic properties of silica-alumina and its catalytic activities for olefin polymerization.
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概要
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The influences of the degree of hydration of a silica–alumina surface on its Bronsted or Lewis acid content and on its catalytic activity for <I>cis</I>-2-butene polymerization were investigated at 30 °C as a function of the evacuation temperature. The raise in the evacuation temperature, <I>i.e.</I>, the decrease in the degree of hydration, gave rise to an increase in both the Lewis acid content and the catalytic activity but to a decrease in the Bronsted acid concent. A good linear relationship, which could not be extrapolated through the origin, was found between the Lewis acid content and the catalytic activity. Thus, the conclusion is drawn that only strong Lewis acid sites are active in olefin polymerization on silica–alumina at low temperature.
- 公益社団法人 日本化学会の論文
著者
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Yoneda Yukio
Department Of Molecular Pharmacology Kanazawa University Faculty Of Pharmaceutical Sciences
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Ikeda Masanori
Department Of Electrical And Electronic Engineering College Of Engineering Nihon University
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Take Jun-ichiro
Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo
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Ikeda Masanori
Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo
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