SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2012, Vol. 20 ›› Issue (4): 784-792.

• MATERIALS AND PRODUCT ENGINEERING • Previous Articles     Next Articles

Immobilization of β-Cyclodextrin as Insoluble β-Cyclodextrin Polymer and Its Catalytic Performance

JIANG Hongguo1, YANG Zujin2, ZHOU Xiantai2, FANG Yanxiong1, JI Hongbing2   

  1. 1. Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China;
    2. School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2011-02-21 Revised:2011-12-16 Online:2012-09-15 Published:2012-08-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (21036009,21176268);the Higher-level Talent Project for Guangdong Provincial Universities;the Fundamental Research Funds for the Central Universities;Guangdong Province 211 Project

Immobilization of β-Cyclodextrin as Insoluble β-Cyclodextrin Polymer and Its Catalytic Performance

江红果1, 杨祖金2, 周贤太2, 方岩雄1, 纪红兵2   

  1. 1. Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China;
    2. School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • 通讯作者: FANG Yanxiong, E-mail:fangyx@gdut.edu.cn;JI Hongbing, E-mail:jihb@mail.sysu.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21036009,21176268);the Higher-level Talent Project for Guangdong Provincial Universities;the Fundamental Research Funds for the Central Universities;Guangdong Province 211 Project

Abstract: Insoluble β-cyclodextrin polymers were prepared from β-cyclodextrin(β-CD) using epichlorohydrin(EPI) as crosslinking agent under basic conditions.The polymers were characterized by Fourier Transform Infrared(FTIR),Thermogravimetry(TG),X-ray diffraction(XRD) and TG-FTIR.The results demonstrated that the polym-erization between EPI and β-CD indeed occurred,and a number of CD rings were interconnected to form a three-dimensional network.Moreover,different factors influencing the polymerization,e.g. molar ratio of EPI to β-CD,the concentration of NaOH and reaction temperature,have been investigated.The polymer prepared under the optimal conditions(the molar ratio EPI:β-CD of 44,the NaOH concentration 50% in mass,and the temperature at 65℃) showed excellent thermal stability and insolubility in organic solvents or strong acid/base.In addition,the β-cyclodextrin polymers also presented high catalytic activity for aqueous oxidation of benzyl alcohol with hy-pochlorite as oxidant.

Key words: β-cyclodextrin polymers, epichlorohydrin, polymerization, catalytic activity

摘要: Insoluble β-cyclodextrin polymers were prepared from β-cyclodextrin(β-CD) using epichlorohydrin(EPI) as crosslinking agent under basic conditions.The polymers were characterized by Fourier Transform Infrared(FTIR),Thermogravimetry(TG),X-ray diffraction(XRD) and TG-FTIR.The results demonstrated that the polym-erization between EPI and β-CD indeed occurred,and a number of CD rings were interconnected to form a three-dimensional network.Moreover,different factors influencing the polymerization,e.g. molar ratio of EPI to β-CD,the concentration of NaOH and reaction temperature,have been investigated.The polymer prepared under the optimal conditions(the molar ratio EPI:β-CD of 44,the NaOH concentration 50% in mass,and the temperature at 65℃) showed excellent thermal stability and insolubility in organic solvents or strong acid/base.In addition,the β-cyclodextrin polymers also presented high catalytic activity for aqueous oxidation of benzyl alcohol with hy-pochlorite as oxidant.

关键词: β-cyclodextrin polymers, epichlorohydrin, polymerization, catalytic activity