General information
| Title: | Partial oxidation of small alkane molecules using microscopic amounts of VxOy catalysts |
| Research areas: | Physical and anorganic chemistry |
| Leader: | Prof. Dr. Robert Schlögl | Dr. Christian Hess |
Dr. Dangsheng Su |
| Fritz-Haber-Institut der MPG
Abteilung Anorganische Chemie Faradayweg 4-6 D-14195 Berlin Telefon: 030-84 13-44 00 Telefax: 030-84 14-44 01 E-Mail-Adresse:acsek@fhi-berlin.mpg.de |
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Abstract:
Project B2 focuses on structure-activity relations
of small VxOy particles. Recently, a new micro-reactor
system has been set up, which allows to study samples regarding their catalytic
activity in C3 and C4 selective oxidation (at 1 atm) and, without exposure to
ambient and/or any further preparation, regarding their structure using TEM
and its analytical capabilities. Chemically prepared nanostructured VxOy
particles as well as silica SBA-15 supported vanadia will be investigated, besides
VxOy nanorods, supported on carbon nanofibers, which due
to their intrinsic electrical conductivity are very well suited for surface
analytical investigations. Our results will be compared with those obtained
for VPO, which because of its technical importance serves as our catalytic reference
system. The oxidation state of the VxOy catalysts is studied
using in situ XPS. In the near future, also structural information will be available
by combining the XPS experiment with in situ Raman spectroscopy. Within the
SFB, our project has an important bridging function as it links the experimental
studies on 2-dimensional model systems with those on (real)catalytic systems
both material-wise as well regarding their functional complexity. There will
be a close collaboration with theory regarding investigations on electronic
structure as well as vibrational-spectroscopic properties.