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Synthesis of polycarbonate diol catalyzed by metal-organic framework Zn4O[CO2-C6H4-CO2]3

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Abstract

The metal-organic framework Zn4O[1,4-benzenedicarboxylate]3 (Zn4O[CO2-C6H4-CO2]3, commonly known as MOF-5, was prepared by the ultrasonic irradiation method. The catalyst was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. It was then used as the catalyst for the preparation of polycarbonate diol (PCDL) via the transesterification between diphenyl carbonate (DPC) and 1, 6-hexandiol (1, 6-HD). Its catalytic activity in the transesterification process is evaluated by the yield of phenol, and its catalytic activity in the polycondensation process is determined by the number-average molecular weight (M n) and the hydroxyl value. Compared to the triethylenediamine (C6H12N2), Mg-Al layered double hydroxide (Mg-Al LDH), sodium ethoxide (C2H5ONa) and sodium methoxide (CH3ONa), MOF-5 exhibits highest catalytic activity for the preparation of PCDL. Under reaction conditions (n (1,6-HD)/n(DPC) = 1.2, w(catalyst) = 0.03%, 198 °C), the yield of phenol is up to 90.1% and the PCDL shows highest M n and lowest hydroxyl value.

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Authors and Affiliations

  1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China

    LiPing Wang, Bin Xiao & GongYing Wang

  2. Changzhou Key Laboratory of Green and Technology, Changzhou Institute of Chemistry, Changzhou, 213164, China

    LiPing Wang, Bin Xiao, GongYing Wang & JiQian Wu

  3. Graduate School of Chinese Academy of Sciences, Beijing, 100039, China

    LiPing Wang

  4. Department of Chemistry, Qujing Normal College, Qujing, 655000, China

    LiPing Wang & Bin Xiao

Authors
  1. LiPing Wang
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  2. Bin Xiao
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  3. GongYing Wang
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  4. JiQian Wu
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Correspondence to GongYing Wang.

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Wang, L., Xiao, B., Wang, G. et al. Synthesis of polycarbonate diol catalyzed by metal-organic framework Zn4O[CO2-C6H4-CO2]3 . Sci. China Chem. 54, 1468–1473 (2011). https://doi.org/10.1007/s11426-011-4284-0

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  • DOI: https://doi.org/10.1007/s11426-011-4284-0

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