Synthesis and catalytic properties of porous Nb-Mo oxide solid acid

Caio Tagusagawa, Atsushi Takagaki, Ai Iguchi, Kazuhiro Takanabe, Junko N. Kondo, Kohki Ebitani, Takashi Tatsumi, Kazunari Domen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Several porous NbxMo10-x mixed oxides prepared from NbCl5 and MoCl5 in the presence of block copolymer surfactant Pluronic P-123 were examined as potential solid acid catalysts. Amorphous mesoporous structures were observed in samples with x from 10 to 9, whereas samples with higher Mo concentrations (x = 3-8) formed large pores by inter-particle voids and a non-porous structures with crystallized molybdenum oxide (MoO3) were observed in samples with x from 0 to 2. The acid strength increased with increasing the Mo content in NbxMo 10-x oxides, which was determined by NH3 temperature-programmed desorption (NH3-TPD) and Fourier transform infrared (FT-IR) spectroscopy using pyridine as a probe molecule. Porous Nb 3Mo7 oxide exhibited the highest acid-catalytic activity for the Friedel-Crafts alkylation of anisole due not only to mole ratio of Nb/Mo but also to pore structure.

Original languageEnglish (US)
Pages (from-to)358-363
Number of pages6
JournalCatalysis Today
Issue number1
StatePublished - Apr 30 2011


  • FT-IR
  • Friedel-Crafts alkylation
  • Porous metal oxide
  • Solid acid

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry


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