含Zn(2＋)的金属有机骨架材料对碳酸二苯酯与1,4-丁二醇酯交换反应的催化性能

Transesterification Between Diphenyl Carbonate and 1,4-Butanediol Catalyzed by Metal-Organic Framework Based on Zn^(2+)

采用溶剂热法制备了Zn2+和对苯二甲酸组合形成的金属有机骨架材料(MOF),并用X射线衍射(XRD)和红外光谱(FT-IR)对其进行了表征。研究了MOF对碳酸二苯酯(DPC)与1,4-丁二醇(1,4-BD)酯交换反应合成聚碳酸酯二醇(PCDL)的催化活性,并与乙酰丙酮氧钛(TiO(acac)2)、乙酰丙酮锌(Zn(acac)2)和锌铝类水滑石(Zn-A-lCO3LDH)等催化剂进行了比较。结果显示,MOF是该酯交换反应的良好催化剂。在优化的反应条件下,获得了数均分子量为3470,羟基值为35.2mg KOH/g的PCDL。

Metal-organic framework （MOF） based on Zn2＋ and terephthalic acid was prepared and characterized with X-ray diffraction （XRD） and Fourier transform infrared spectroscopy （FT-IR）. The catalytic activity of MOF for the transesterification between diphenyl carbonate （DPC） and 1,4-butanediol （1,4-BD） to polycarbonate diol （PCDL） was investigated, and was compared with that of catalysts such as titaniumoxide acetylacetonate （TiO（acac）2）, zinc acetylacetonate （Zn（aeac）2） and Zn-A1-CO3 layered double hydroxides （Zn-A1-CO3 LDH）. The results show that MOF is an efficient catalyst for the transesterifieation. Under optimal reaction conditions, PCDL with number average molecular weight （Mn） of 3470 and hydroxyl value of 35.2 nag KOH/g was synthesized.