Adsorption of Diols on Silica Gel Modified by Phenylboronic Acid
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概要
- 論文の詳細を見る
Diols are key intermediate materials for polymers. Conventional distillation techniques for the separation of diols require a substantial energy input. Alternatively, in this paper we examine an adsorption technique to recover and separate diols. Silica gels modified by boronate were used as a selective adsorbent for diols. First, using potentiometric titration, we examined the number and pKa of the active site included in the gels. The values of the pKa of the boronate were larger than that of phenylboronic acid. From the adsorption experiments on the resin, we found that main adsorption mechanism was a complex formation between neutral boronic acid and the diols. A pH value smaller than pKa (=10) of boronate is desirable for the adsorption of diols. Silica gels modified by phenylboronic acid effectively adsorbed the hydrophobic diols. The adsorption capacity of vicinal and 1,3-diols were similar.
- 社団法人 化学工学会の論文
- 2007-01-01
著者
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KONDO Kazuo
Department of Chemical Engineering and Materials Science, Faculty of Engineering, Doshisha Universit
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Matsumoto Michiaki
Department Of Applied Chemistry Oita University
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Kusumoto Kouji
Department Of Chemical Engineering And Materials Science Faculty Of Engineering Doshisha University
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Sugimoto Takashi
Department Of Chemical Engineering And Materials Science Faculty Of Engineering Doshisha University
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Matsumoto Michiaki
Department Of Chemical Engineering And Materials Science Faculty Of Engineering Doshisha University
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Kondo Kazuo
Department Of Chemical Engineering And Materials Science Doshisha University
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Kondo Kazuo
Department Of Applied Chemistry Okayama University
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