Studies on Functional Redox Fiber──Preparation of Fibers Containing Hydroxy-alkylamine Groups and Their Redox Adsorption Reaction Towards Au3+

Abstract

Abstract: Three kinds of functional fibers Ⅰ,Ⅱ and Ⅲ are prepared by amination of reactive chloromethylated fiber with diethanolamine, ethanolamine and triethanolamine, and their nitrogen contained amount is 2.26,2.71 and 1.86 mmol/g,respectively.The results of adsorption experiments indicate that maximum adsorption amount of the fibers towards Au³⁺ is 550,620 and 409 mg/g, respectively,and they can reduce partly Au (Ⅲ) adsorbed into Au(0).By elemental analysis, IR, NMRand ESCA,it is proved that carbon atoms bonding with hydroxyl groups near nitrogen atoms are oxidized into carbonyl ones during redox reaction of fibers conatining hydroxy-alkylamine groups with Au (Ⅲ),but nitrogen atoms are not done.

Key words: Redox fiber, Fiber containing diethanolamine group, Gold, Redox adsorption, Redox mechanism

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TANG Shun-Qing, LU Yun, ZENG Han-Min. Studies on Functional Redox Fiber──Preparation of Fibers Containing Hydroxy-alkylamine Groups and Their Redox Adsorption Reaction Towards Au³⁺[J]. Chem. J. Chinese Universities, 1996, 17(3): 490.

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Studies on Functional Redox Fiber──Preparation of Fibers Containing Hydroxy-alkylamine Groups and Their Redox Adsorption Reaction Towards Au³⁺

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