Naphthalene Decomposition on Fe(110)─Adsorption, Dehydrogenation, Surface Carbon Formation and the Influence of Coadsorbed Oxygen
Tar is an undesirable byproduct of biomass gasification, which can be removed through catalytic reforming to syngas components. Iron is a promising, abundant alternative to highly active but toxic nickel catalysts. The results observed so far in catalytic studies with iron have been mixed. In this paper, the decomposition of naphthalene, a representative model compound of tar, was studied on the catalytic Fe(110) surface using temperature-programmed desorption (TPD), sum frequency generation spectroscopy (SFG), and X-ray photoelectron spectroscopy (XPS). Napthalene adsorption, dehydrogenation and the formation of surface carbon were investigated, as well as the influence of oxygen. In comparison with previous studies on Ni(111), a similar dehydrogenation activity was found for Fe(110) with two main H<sub>2</sub> TPD peaks at 450 and 550 K. The reaction of naphthalene on Fe(110) resulted in the predominant formation of carbidic and atomically adsorbed carbon on the surface, which did not dissolve into the bulk even at high temperatures. A moderately carbon-covered surface was shown to still be active toward naphthalene decomposition. Similarly to Ni(111), large amounts of oxygen inhibited the reaction but, at low oxygen doses, very high hydrogen yields were observed, suggesting that Fe(110) could be a valid alternative for tar decomposition.
Authors
- Xiaoming Hu (ORCID: https://orcid.org/0000-0003-0177-1993)
- Tony Hansson (ORCID: https://orcid.org/0000-0002-8051-0582)
- Lea Hohmann (ORCID: https://orcid.org/0000-0001-5167-6025)
- Jerry LaRue (ORCID: https://orcid.org/0000-0002-8081-5335)
- Dan J. Harding (ORCID: https://orcid.org/0000-0002-8622-9046)
- Giorgio Bruno Braghin (ORCID: https://orcid.org/0000-0001-7652-5362)
- Jonas Weissenrieder (ORCID: https://orcid.org/0000-0003-1631-4293)
- Javier Martínez-Gómez (ORCID: https://orcid.org/0000-0001-8807-7595)
- H. M. Robertson (ORCID: https://orcid.org/0000-0002-0749-2787)
- H. Öström (ORCID: https://orcid.org/0000-0003-3920-6965)
- Klas Engvall (ORCID: https://orcid.org/0000-0002-6326-4084)
- Franziska Dahlmann (ORCID: https://orcid.org/0000-0003-2898-7460)
- M. Göthelid (ORCID: https://orcid.org/0000-0002-6785-8293)
- Amirreza Ghassami (ORCID: https://orcid.org/0000-0003-4487-6736)
- Anton Harrer (ORCID: https://orcid.org/0009-0006-6950-6693)
- L. Hussein (ORCID: https://orcid.org/0009-0008-6880-6971)
- Léonie Laviron
- Jona Guiborat
Institutions
- University of Applied Sciences Technikum Wien (AT)
- Stockholm University (SE)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- Chapman University (US)
- Lund University (SE)
- Institut National Polytechnique de Toulouse (FR)
- École Nationale Supérieure des Ingénieurs en Arts Chimiques et Technologiques (FR)
- Lightmatter (United States) (US)
- Schmid (Germany) (DE)
- Wallenberg Wood Science Center (SE)
- MAX IV Laboratory (SE)
- Institute for Sustainability (GB)
- KTH Royal Institute of Technology (SE)
Publication Details
- Journal
- The Journal of Physical Chemistry C
- Published
- 2025-01-27
- DOI
- https://doi.org/10.1021/acs.jpcc.4c06619
- Citations
- 4
- Primary Topic
- Advanced Chemical Physics Studies
- Type
- article
- Field-Weighted Citation Impact
- 4.99
Funders
- National Science Foundation
- Stiftelsen för Strategisk Forskning
- VINNOVA
- Svenska Forskningsrådet Formas
- Knut och Alice Wallenbergs Stiftelse
- Vetenskapsrådet
- Stiftelsen för Strategisk Forskning