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- Kwak, Ja Hun
- Molecular Catalysis Lab.
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A new class of highly dispersed VOx catalysts on mesoporous silica: Synthesis, characterization, and catalytic activity in the partial oxidation of ethanol
- Alternative Title
- A new class of highly dispersed VOx catalysts on mesoporous silica: Synthesis, characterization, and catalytic activity in the partial oxidation of ethanol
- Author(s)
- Kwak, Jahun, Jose E. Herrera, Jian Zhi Hu, Yong Wang, C.H.F. Peden
- Issued Date
- 2006-01
- Citation
- APPLIED CATALYSIS A-GENERAL, v.300, no.2, pp.109 - 119
- Abstract
- The morphology of vanadium oxide supported on a titania-modified mesoporous silica (MCM-41), obtained by means of a careful grafting process through atomic layer deposition, was studied using a variety of characterization techniques. The X-ray diffraction (XRD) together with transmission electron microscopy (TEM), V-51 nuclear magnetic resonance (V-51-NMR), Raman, FTIR and DRS-UV/Vis results showed that the vanadia species are extremely well dispersed onto the surface of the mesoporous support; the dispersion being stable upon thermal treatments up to 400 degrees C. Studies of the catalytic activity of these materials were performed using the partial oxidation of ethanol as a probe reaction. The results indicate an intrinsic relationship between dispersion, the presence of a TiO2-VOx phase, and catalytic activity for oxidation and dehydration. (c) 2005 Elsevier B.V. All rights reserved
- Publisher
- ELSEVIER SCIENCE BV
- ISSN
- 0926-860X
- Keyword (Author)
- vanadium oxid, MCM-41, atomic layer deposition, ethanol partial oxidation V-51-NMR, UV-vis DRS, Raman
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