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Topics in Catalysis

, Volume 39, Issue 3–4, pp 245–255 | Cite as

Synthesis of nanodispersed oxides of vanadium, titanium, molybdenum, and tungsten on mesoporous silica using atomic layer deposition

  • Jose E. HerreraEmail author
  • Ja Hun Kwak
  • Jian Zhi Hu
  • Yong Wang
  • Charles H. F. Peden
Article

The advantages of the atomic layer deposition (ALD) method for preparation of tungsten, vanadium, titanium, and molybdenum oxide catalyst supported on mesoporous silica are discussed, with emphasis on the importance of synthesis conditions on dispersion, structure and activity of the resulting materials. A suite of complementary techniques such as DRS-UV/Vis, BET, 1H-NMR, XRD, and TEM were used to study the structural properties of the supported metal oxides, and probe reactions such as 2-butanol dehydration and ethanol partial oxidation were used to demonstrate the potential advantages of the ALD-prepared catalysts. Specifically, highly dispersed oxides of titanium, molybdenum, and tungsten oxide on mesoporous silica were synthesized using the ALD method. It is also demonstrated that attainment of high dispersions of vanadium oxide on mesoporous silica requires the presence of at least a single layer of titanium oxide due to the well-known poor interaction between vanadia and silica. The highly dispersed catalysts prepared here by ALD methods exhibited superior catalytic performance relative to those prepared using conventional incipient wetness impregnation.

Keywords

atomic layer deposition tungsten oxide vanadium oxide titanium oxide molybdenum oxide ethanol oxidation 2-butanol dehydration UV/Vis-DRS 1H-NMR 

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Jose E. Herrera
    • 1
    Email author
  • Ja Hun Kwak
    • 1
  • Jian Zhi Hu
    • 1
  • Yong Wang
    • 1
  • Charles H. F. Peden
    • 1
  1. 1.Institute for Interfacial CatalysisPacific Northwest National LaboratoryRichlandUSA

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