Determination of heats of adsorption of triphenylchloromethane from its hexane solution onto dehydrated silica-alumina surface.
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概要
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Heats of adsorption of gaseous triphenylchloromethane (TPC) onto silica–alumina surface were determined from the heat evolved with the immersion of silica–alumina into TPC–hexane solution. The heat of dissolution and the heat of sublimation of TPC and the heat of immersion of the sample into hexane were considered for their determination. It became clear that TPC molecules interacted with silica–alumina surface in two manners. The one was observed in smaller adsorbed amount (below 45 μmol/g), and the other in adsorbed amount from 45 to 100 μmol/g. The former could be attributed to the interaction between TPC and Lewis or oxidizing sites and the latter to the attractive interaction between the adsorbed molecules. The adsorbed amount in the first stage (4.7×10<SUP>12</SUP> molecules/cm<SUP>2</SUP>) agreed closely with the number of Lewis acid sites (5.0×10<SUP>12</SUP> sites/cm<SUP>2</SUP>) measured by Leftin and Hall.
- 公益社団法人 日本化学会の論文
著者
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Takahashi Hiroshi
Institute Of Industrial Science The University Of Tokyo
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Masuda Tatsuo
Institute of Industrial Science, The University of Tokyo
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Tsutsumi Kazuo
Institute of Industrial Science, The University of Tokyo
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Taniguchi Hitofumi
Institute of Industrial Science, The University of Tokyo
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