Adsorption of organic molecules on the active sites of hydrodesulfurization catalysts

PhD defence, Wednesday, 20 September 2017. Norberto José Salazar Moreira

2017.09.20 | Steffi Hjerrild Iversen

Norberto José Salazar Moreira

During his PhD studies, Norberto Salazar Moreira has used Scanning Tunneling Microscopy and X-ray Photoelectron Spectroscopy to elucidate some of the fundamental questions regarded to the understanding of the growth mechanism, active structures, preferable adsorption sites and deactivation origin of the non-promoted and Co-promoted MoS2-based catalysts used in the refinery for the conversion of heavy feedstocks and for improving the quality of the final oil products. Typical sulfur and nitrogen-containing molecules present in real feeds as thiophene, dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (4,6-DMDBT), pyridine and quinoline are used to understand the reactivity of the active sites on hydrodesulfurization catalysts.

These findings could potentially enable the improvement of the current catalysts or the design of new catalyst on the molecular level for deep desulfurization, providing environmentally more acceptable fuels.

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

This résumé was prepared by the PhD student.


Wednesday 20 September 2017 at 13.15
Place: Building 1593, room 012, the Lecture Theatre, iNANO house, Gustav Wieds Vej 14, Aarhus University, 8000 Aarhus C.
Title of dissertation: Atomic-scale investigation of the interaction of organic molecules with MoS2-based hydrotreating model catalysts
Contact information: Norberto José Salazar Moreira, e-mail:, tel.: +45 42703929
Members of the assessment committee:
Assistant Professor Irene Groot, Institute of Chemistry, University of Leiden University, The Netherlands
Lecturer, Director Renald Schaub, Department of Chemistry, University of St Andrews, United Kingdom
Associate Professor Liv Hornekær (chair), Department of Physics and Astronomy, Aarhus University
Main supervisor:
Associate Professor Jeppe Vang Lauritsen, iNANO, Aarhus University
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
Comments on content: 
Revised 19.09.2017