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  Raman spectroscopy of molybdenum oxides: Part II. resonance Raman spectroscopic characterization of the molybdenum oxides Mo4O11 and MoO2

Dieterle, M., & Mestl, G. (2002). Raman spectroscopy of molybdenum oxides: Part II. resonance Raman spectroscopic characterization of the molybdenum oxides Mo4O11 and MoO2. Physical Chemistry Chemical Physics, 4(5), 822-826. Retrieved from http://dx.doi.org/10.1039/b107046k.

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 Creators:
Dieterle, Martin1, Author              
Mestl, Gerhard1, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Free keywords: MECHANICALLY ACTIVATED MOO3, POWERFUL TOOL, IN-SITU, CATALYSTS, OXIDATION, TUNGSTEN, DEFECTS 8 Mixed V/W/Mo oxides for selective oxidation
 Abstract: A special sample was prepared by controlled oxidation of MoO2, which contained MoO2, Mo4O11 and MoO3, in order to extend the knowledge about the resonance Raman effect in reduced molybdenum oxides from those close to MoO3 to those close to MoO2. This knowledge is of paramount importance because technical partial oxidation catalysts often contain intermediate Mo oxides of the Magneli type, e.g. Mo4O11, or Mo5O14. The Raman spectra of orthorhombic Mo4O11 and MoO2 have been identified in a Raman microspectroscopic image of 100 single spectra recorded of a mixture of MoO3, MoO2 and Mo4O11. A resonance Raman effect was proven to be responsible for the detection of the molybdenum oxide phases Mo4O11 and MoO2 in dilution with BN when excited at alaser wavelength of 632.8 nm by comparison with Raman microspectroscopic images of the identical sample when excited at 532 nm. The resonance Raman detection of reduced molybdenum oxide phases is discussed in the above mentioned context of their active role in catalytic partial oxidation reactions.

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Language(s): eng - English
 Dates: 2002
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 1590
URI: http://dx.doi.org/10.1039/b107046k
 Degree: -

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Title: Physical Chemistry Chemical Physics
  Alternative Title : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Pages: - Volume / Issue: 4 (5) Sequence Number: - Start / End Page: 822 - 826 Identifier: ISSN: 1463-9076