Synthesis, characterization of bimetallic Ce-Fe-SBA-15 and its catalytic performance in the phenol hydroxylation

Yanhua Zhang, Fei Gao, Haiqin Wan, Cheng Wu, Yan Kong, Xingcai Wu, Bin Zhao, Lin Dong, Yi Chen

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

A series of Ce and Fe incorporated SBA-15 mesoporous materials were synthesized through direct hydrothermal method and characterized by using inductively coupling plasma atomic emission spectrometry (ICP-AES), powder X-ray diffraction (XRD), thermo gravimetry and differential scanning calorimetry (TG/DSC), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FT-IR), ultraviolet-visible diffuse reflectance spectra (UV-vis) and N2 adsorption-desorption isotherm techniques. The results indicated that: (1) all the samples exhibited typical hexagonal arrangement of mesoporous structure with high surface area, (2) the heteroatoms were, at least in some extent, incorporated into the framework of SBA-15, (3) high utilization of the Fe and Ce could be achieved through the hydrothermal treatment, and (4) the incorporation of Fe could efficiently promote the incorporation/dispersion behavior of Ce into the SBA-15. Catalytic performances of the obtained materials were evaluated in the hydroxylation of phenol with H2O2. Catalytic tests showed the different selectivity with different incorporated Ce/Fe ratios, and the results suggest that an appropriate Ce/Fe ratio would be the optimal catalyst for the reaction.

Original languageEnglish
Pages (from-to)393-401
Number of pages9
JournalMicroporous and Mesoporous Materials
Volume113
Issue number1-3
DOIs
StatePublished - 1 Aug 2008

Keywords

  • Bimetal incorporation
  • Characterization
  • Phenol hydroxylation
  • SBA-15
  • Synthesis

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