SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2009, Vol. 17 ›› Issue (2): 200-206.

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Preparation and Characterization of Tungsten-substituted Molybdophosphoric Acids and Catalytic Cyclodehydration of 1,4-Butanediol to Tetrahydrofuran

吴慧雄1; 周梅1; 屈一新1; 李海霞2; 殷恒波2   

  1. 1. Faculty of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
    2. Faculty of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
  • 收稿日期:2008-08-19 修回日期:2008-10-21 出版日期:2009-04-28 发布日期:2009-04-28
  • 通讯作者: QU Yixin,E-mail:quyx@mail.buct.edu.cn
  • 基金资助:

    Supported by Research Funds from Chinese Education Department (2003406);Bureau of Science and Technology of Jiangsu Province (BG2006025)

Preparation and Characterization of Tungsten-substituted Molybdophosphoric Acids and Catalytic Cyclodehydration of 1,4-Butanediol to Tetrahydrofuran

WU Huixiong1; ZHOU Mei1; QU Yixin1; LI Haixia2; YIN Hengbo2   

  1. 1. Faculty of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
    2. Faculty of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
  • Received:2008-08-19 Revised:2008-10-21 Online:2009-04-28 Published:2009-04-28
  • Supported by:

    Supported by Research Funds from Chinese Education Department (2003406);Bureau of Science and Technology of Jiangsu Province (BG2006025)

摘要: A series of tungsten-substituted molybdophosphoric acids(H3PMo12-nWnO40·xH2O) were synthesized and characterized by inductive coupled plasma atomic emission spectroscopy(ICPAES),thermal gravimetry and differential scanning calorimetry(TG-DSC),Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),and FTIR pyridine adsorption.The as-prepared heteropoly acids have a Keggin type structure.The synthesis of tetrahydrofuran by reactive distillation and cyclodehydration of 1,4-butanediol was studied using the tungsten-substituted molybdophosphoric acids as catalysts.The results of catalytic test indicated that the catalytic activity increased with the increase in the substitution number(n) of tungsten atom in H3PMo12-nWnO40·xH2O and was constant as the substitution number(n) was more than 8.The catalytic activity increased with the increase in the catalyst loading and the selectivity of tetrahydrofuran was nearly 100%.

关键词: tungsten-substituted molybdophosphoric acid, 1,4-butanediol, tetrahydrofuran, reactive distillation

Abstract: A series of tungsten-substituted molybdophosphoric acids(H3PMo12-nWnO40·xH2O) were synthesized and characterized by inductive coupled plasma atomic emission spectroscopy(ICPAES),thermal gravimetry and differential scanning calorimetry(TG-DSC),Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),and FTIR pyridine adsorption.The as-prepared heteropoly acids have a Keggin type structure.The synthesis of tetrahydrofuran by reactive distillation and cyclodehydration of 1,4-butanediol was studied using the tungsten-substituted molybdophosphoric acids as catalysts.The results of catalytic test indicated that the catalytic activity increased with the increase in the substitution number(n) of tungsten atom in H3PMo12-nWnO40·xH2O and was constant as the substitution number(n) was more than 8.The catalytic activity increased with the increase in the catalyst loading and the selectivity of tetrahydrofuran was nearly 100%.

Key words: tungsten-substituted molybdophosphoric acid, 1,4-butanediol, tetrahydrofuran, reactive distillation