Montmorillonite Supported Titanium/Antimony Catalyst: Preparation, Characterization and Immobilization
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2014年第3期
论文作者：陈贵勇 王小群 ZHAO Chuan DU Shanyi
文章页码：455 - 462
摘 要：Montmorillonite supported titanium（Ti-MMT） or antimony catalyst（Sb-MMT） has been a hot area of research on preparing polyethylene terephthalate/montmorillonite（PET/MMT） nanocomposites by in situ polymerization. So removal of Ti or Sb from Ti-MMT or Sb-MMT is not expected during in situ polymerization. Studies on immobilization of Ti or Sb on Ti-MMT or Sb-MMT are seldom reported. In this work, a series of montmorillonite supported catalysts of titanium（Ti-MMT） or antimony（Sb-MMT） and cointercalated montmorillonite of titanium and antimony（Ti/Sb-MMT） were prepared by（1） the reaction of sodium bentonite suspension with intercalating solution containing titanium tetrachloride and/or antimony chloride, and（2） drying or calcinating the products at different temperature（100, 150, 240, 350 and 450 ℃）. The physicochemical properties of these MMT supported catalysts were studied by X-ray diffraction（XRD）, fourier transform infrared spectroscopy（FT-IR）, inductively coupled plasma optical emission spectrometer（ICPOES）, N 2 adsorption/desorption isotherms, UV-visible diffuse reflectance spectroscopy（UV-vis） and transmission electron microscopy（TEM）. The immobile character of Ti or Sb on MMT supported catalysts was evaluated by a two-step method in deionized water or ethylene glycol. Several results were obtained, i e,（a） during the preparation, with an increase in drying or calcinating temperature, the amount of titanium and/or antimony species remained on these MMT supported catalysts decreased,（b） the experiments about immobile character of Ti or/and Sb showed that with an increase in drying or calcinating temperature, the immobilization of Ti and/or Sb species remained on these MMT supported catalysts increased gradually,（c） Ti-MMT calcinated at 450 ℃ had the biggest pore volume, which means Ti-MMT had the best adsorption application prospect.
陈贵勇，王小群，ZHAO Chuan，DU Shanyi
School of Material Science and Engineering, Beihang University
摘 要：Montmorillonite supported titanium（Ti-MMT） or antimony catalyst（Sb-MMT） has been a hot area of research on preparing polyethylene terephthalate/montmorillonite（PET/MMT） nanocomposites by in situ polymerization. So removal of Ti or Sb from Ti-MMT or Sb-MMT is not expected during in situ polymerization. Studies on immobilization of Ti or Sb on Ti-MMT or Sb-MMT are seldom reported. In this work, a series of montmorillonite supported catalysts of titanium（Ti-MMT） or antimony（Sb-MMT） and cointercalated montmorillonite of titanium and antimony（Ti/Sb-MMT） were prepared by（1） the reaction of sodium bentonite suspension with intercalating solution containing titanium tetrachloride and/or antimony chloride, and（2） drying or calcinating the products at different temperature（100, 150, 240, 350 and 450 ℃）. The physicochemical properties of these MMT supported catalysts were studied by X-ray diffraction（XRD）, fourier transform infrared spectroscopy（FT-IR）, inductively coupled plasma optical emission spectrometer（ICPOES）, N 2 adsorption/desorption isotherms, UV-visible diffuse reflectance spectroscopy（UV-vis） and transmission electron microscopy（TEM）. The immobile character of Ti or Sb on MMT supported catalysts was evaluated by a two-step method in deionized water or ethylene glycol. Several results were obtained, i e,（a） during the preparation, with an increase in drying or calcinating temperature, the amount of titanium and/or antimony species remained on these MMT supported catalysts decreased,（b） the experiments about immobile character of Ti or/and Sb showed that with an increase in drying or calcinating temperature, the immobilization of Ti and/or Sb species remained on these MMT supported catalysts increased gradually,（c） Ti-MMT calcinated at 450 ℃ had the biggest pore volume, which means Ti-MMT had the best adsorption application prospect.
关键词：
