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4月 19 - 4月 19

X-ray characterization of catalysts



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We present a variety of X-ray techniques for a structural characterization of catalysts on the example of automotive three-way catalysts at ambient and non-ambient conditions.

X-ray techniques, such as X-ray diffraction (XRD) and fluorescence (XRF) small-angle X-ray scattering (SAXS) and X-ray scattering in combination with pair distribution function (PDF) analysis are often traditionally assigned to large-scale facilities, like synchrotrons and spallation neutron sources.

We demonstrate, however, that these methods can be combined on laboratory instruments (most of which even on one single XRD platform).

As a model system we present supported PdO nanoparticles on reducible oxides such as Co3O4 and γ-Fe2O33. Parameters and characteristics that can be extracted from the X-ray experiments are:
• Elemental composition
• Qualitative and quantitative phase composition
• Phase behavior and stability in situ heating and cooling experiments)
• Crystallite size and structure
• Particle size and shape, size distribution, specific surface area
• Short- and long- range atomic ordering

This is an opportunity to get an insight into novel ways of catalysts characterization using laboratory instruments, presented by one of Malvern Panalytical's X-ray diffraction experts.

Webinar details

Date: April 19, 2018
Time: 10:30 - 11:30 (GMT-05:00) Eastern [US & Canada]

Panelist: Natalia Dadivanyan, application specialist XRD Natalia Dadivanyan has studied chemistry in Moscow State University (Russia). After completing her master thesis on synthesis and characterization of polymer liquid crystalline films Natalia moved to University of Freiburg (Germany) to obtain her PhD degree working on liquid crystalline elastomers. This was followed by a post-doc position in the Eindhoven University of Technology (The Netherlands), where Natalia focused on organic semi-conductors. In 2012 Natalia joined PANalytical as an Application Specialist XRD, in Almelo (The Netherlands).



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