Exploring the Crystal Structure of a deNOx Zeolite Catalyst – Not the Exact Same Variant as Used by VW

PhD defence, Friday 19 January 2018, Casper Welzel Andersen.

2018.01.19 | Trine Berndt Turtiainen Scheelke

Casper Welzel Andersen

During his studies, Casper Welzel Andersen researched the cationic species in zeolitic compounds. Zeolites are porous crystalline materials, successfully used as adsorbents, ion exchangers, and catalysts today. As a catalyst used in the reduction of NOx gasses (x = 1,2) to N2 and water, the Cu-loaded chabazite zeolite (Cu-CHA) is highly effective, thermally stable over a large temperature range, and relatively inexpensive in production. Furthermore, Cu-CHA has a simple crystal structure, making it ideal as a model system. A fundamental understanding of the crystal structure is a prerequisite for the optimization and further development of the compound. The new research findings contribute to the understanding of the crystal structure of cation-loaded chabazite zeolite, contributing vital information to the scientific community developing and optimizing reliable, affordable, and environmentally clean deNOx catalysts.

The PhD degree was completed at the Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO), Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Friday 19 January 2018 at 9.15
Place: 1593- 12, iNANO Auditorium, iNANO, Aarhus University
Title of dissertation: Characterization of extra-framework species in zeolites
Contact information: Casper Welzel Andersen, e-mail: cwa@inano.au.dk, tel.: +45 61697734
Members of the assessment committee:
Professor Karl-Petter Lillerud, Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Oslo, Norway
Professor Kenny Ståhl, Department of Chemistry, Technical University of Denmark
Professor Liv Hornekær (chair), Department of Physics and Astronomy, Aarhus University
Main supervisor:
Professor Bo Brummerstedt Iversen, Department of Chemistry, iNANO, Aarhus University
Co-supervisor:
Professor Martin Bremholm, Department of Chemistry, Aarhus University
Lars Fahl Lundegaard, Haldor Topsøe A/S, Denmark
Language: The PhD dissertation will be defended in English

The defence is public.
The dissertation is available for reading at the Graduate School of Science and Technology/GSST,
Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 18.01.2018