Synthesis and characterization of three-dimensional ordered macroporous Si–Al compound oxide by sol–gel process

Abstract

A series of three-dimensional ordered macropore (3DOM) Si–Al compound oxide with different ratios of Si/Al were synthesized using a simple colloidal crystal template method. The synthesized material was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). The results show that the addition of 3-Aminpropyltriethoxysilane (APTES) and the concentration of aluminum in the precursor had remarkable impact on the structure but were not observed the transformation of the aluminosilicate crystalline form of the material. The facile synthetic method as well as the ability to control the Si/Al ratio will make 3DOM Si–Al compound oxide have great potential application value as catalyst.