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The influence of the Si/Zr molar ratio on the crystalline structure, textural properties, morphological features and surface acidity of Zr–MCM-41 mesoporous molecular sieves was investigated by X-ray diffraction (XRD), N 2 adsorption–desorption isotherms, 29 Si MAS NMR, TEM and FTIR spectroscopy of pyridine adsorption techniques. It is found that the structural ordering of Zr–MCM-41...
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