Catalyst Characterisation

About

For the synthesis of sustainable chemicals, a catalyst must be used to lower the activation energy of the reactions so that they can proceed at lower temperatures with high conversions. Lower temperatures are advantageous because simpler and cheaper materials can be used in the technical implementation and because less energy must be introduced into the process from the outside. Catalysts usually consist of a catalyst support (pellets or powder) with the largest possible outer surface and an inner pore system, to which and in which the catalyst particles are finely distributed. In simplified terms, one can imagine that the starting materials of a reaction adsorb on the catalyst particles and react there to form the products, which then desorb from the particle surface again. The topics listed below are being addressed by this research group for the development of catalysts.

Research Topics

  • Characterisation of catalysts for the synthesis of higher alcohols from mixtures of green methanol and ethanol
  • Characterisation of catalysts for the e-methanol-to-jet fuel reaction
  • Experimental determination of the d-band centre of monometallic and bimetallic catalysts using photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS)

Contact

Dr. Astrid Besmehn

IET-4

Building 04.8 / Room R 372

+49 2461/61-6774

E-Mail
Publications

Fischer, B. et al.
Advanced atmospheric pressure CVD of a-Si:H using pure and cyclooctane-diluted trisilane as precursors
Sustainable Energy and Fuels 8, 5568 (2024)
DOI: 10.1039/D4SE01308E

Kipshagen, A. et al.
Formic acid as H2 storage system: hydrogenation of CO2 and decomposition of formic acid by solid molecular phosphine catalysts
Catalysis Science and Technology 12, 5649 (2022)
DOI: 10.1039/d2cy00608a

Jiang, WY et al.
Composition-Dependent Morphology, Structure, and Catalytical Performance of Nickel–Iron Layered Double Hydroxide as Highly-Efficient and Stable Anode Catalyst in Anion Exchange Membrane Water Electrolysis
Advanced Functional Materials 32, 2203520 (2022)
DOI: 10.1002/adfm.202203520

Iemhoff, A.
On the Stability of Isolated Iridium Sites in N-Rich Frameworks Against Agglomeration Under Reducing Conditions
ChemCatChem 14, e202200179 (2022)
DOI: 10.1002/cctc.202200179

Pasel, J. et al.
Combined near-ambient pressure photoelectron spectroscopy and temporal analysis of products study of CH4 oxidation on Pd/γ-Al2O3 catalysts
Catalysis Today 360, 444 (2021)
DOI: 10.1016/j.cattod.2019.12.026

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Last Modified: 13.02.2025