Catalytic properties of highly ordered crystalline nanoporous tungsten oxide in butanol dehydration

Hyeonhee Choi, Eunok Lee, Mingshi Jin, Young Kwon Park, Ji Man Kim, Jong Ki Jeon

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6 Scopus citations


Highly ordered mesoporous tungsten oxide (meso-WO3) was successfully synthesized using mesoporous silica KIT-6 as a hard template via the nanoreplication method. The physicochemical properties of meso-WO3 were characterized by X-ray diffraction, nitrogen adsorption-desorption, transmission electron microscopy, X-ray photoelectron spectroscopy, temperature-programmed desorption of ammonia, and infra-red spectroscopy of adsorbed pyridine. No oxidation state other than WO3 was observed in the meso-WO3 sample. Lewis acid sites were dominant in meso-WO3, which could be confirmed by infra-red spectroscopy of pyridine and temperature-programmed desorption of ammonia. Its catalytic behavior in 2-butanol dehydration was investigated in a fixed bed reactor and compared with that of the WO3/MCM-41 catalyst prepared by the atomic layer deposition method. The meso-WO3 catalyst exhibited higher 2-butanol dehydration activity than that of the WO3/MCM-41 catalyst, which is ascribed to the stronger acidity as well as higher amount of acid sites that are mainly composed of Lewis acid sites in the meso-WO3 catalyst.

Original languageEnglish
Pages (from-to)8828-8833
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Issue number11
StatePublished - 1 Nov 2014


  • Butanol dehydration
  • Butene
  • Mesoporous tungsten oxide
  • Nano-replication


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