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Journal Article

Active Sites for Propane Oxidation: Some Generic Considerations


Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl, R. (2011). Active Sites for Propane Oxidation: Some Generic Considerations. Topics in Catalysis, 54(10-12), 627-638. doi:10.1007/s11244-011-9683-0.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-F01D-4
Based on experimental observations about
structure and dynamics of the reactive surface of the M1
phase some considerations are made about the nature and
size of active sites. In analyzing the stoichiometry of the
reactions following activation of propane it occurs that for
dehydrogenation small sites are desirable being just sufficient
to re-activate oxygen without kinetic hindrance. For
deeper oxidation to acrylic acid (AA) the sites should be
larger to accommodate all redox equivalents and oxygen
species required for one transformation. A qualitative
model for size and composition of the active site is made. It
is likely that the active site consists on a VxOy species of
strictly 2-D nature. This follows the structural suggestion
for the active site on the a–b-plane of the M1 structure. The
role of Te in moderating the active site is discussed. The
suggestions are discussed in comparing requirements for
oxidative dehydrogenation of propane (ODP) with those
for AA synthesis.