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Citation: XIN Mei-Hua, XIE Ying, LI Ming-Chun, ZHANG Xing-Song, GU Dan-Dan. Preparation of N-Alkyl Chitosan and Its Adsorption of 2,4-Dichlorophenol[J]. Chinese Journal of Applied Chemistry, ;2008, 25(1): 77-80. shu

Preparation of N-Alkyl Chitosan and Its Adsorption of 2,4-Dichlorophenol

1.
College of Material Science and Engineering, Huaqiao University, Quanzhou 362021

Corresponding author: XIN Mei-Hua,
Received Date: 27 January 2007
Available Online: 30 May 2007
Fund Project: 福建省自然科学基金资助项目(E0540001) (E0540001)

A N-alkyl chitosan derivative was synthesized by reducing Schiff' base formed from the reaction of n-Heptaldehyde and chitosan via phase transfer catalysis.The modified chitosan was characterized by FTIR and XRD.The chitosan derivative was applied to adsorbing 2,4-dichlorophenol.The effects of adsorption conditions,such as time,pH,the concentration of 2,4-dichlorophenol,and the amount of the modified chitosan on the adsorption quantity of 2,4-dichlorophenol were studied.The N-alkyl chitosan exhibited good acid resistance.The solution pH was the main factor affectomg the adsorption.At pH 6.0,the adsorption of 2,4-dichlorophenol reached the maximum in 2 h.The relationship between the concentration of 2,4-dichlorophenol and the adsorption quantity was fitted well to Freundlich equation.N-alkyl chitosan showed better adsorption capability than chitosan.Adsorption capacity of the modified chitosan and chitosan for 2,4-dichlorophenol of 0.6 g/L concentration was 70.0 mg/g and 7.7 mg/g,respectively.
- chitosan,
- alkylation,
- dichlorophenol,
- adsorption
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