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Promoter effect on the reduction behavior of wuestite-based catalysts for ammonia synthesis

Title data

Folke, Jan ; Dembélé, Kassiogé ; Girgsdies, Frank ; Song, Huiqing ; Eckert, Rene ; Reitmeier, Stephan ; Reitzmann, Andreas ; Schlögl, Robert ; Lunkenbein, Thomas ; Ruland, Holger:
Promoter effect on the reduction behavior of wuestite-based catalysts for ammonia synthesis.
In: Catalysis Today. Vol. 387 (2022) Issue SI . - pp. 12-22.
ISSN 0920-5861
DOI: https://doi.org/10.1016/j.cattod.2021.03.013

Abstract in another language

Ammonia synthesis remains one of the most important catalytic processes since it enables efficient hydrogen storage and provides the basis for the production of fertilizers. Herein, complementary bulk and local analytical techniques were combined to investigate the effect of selected promoters (Al, K, Ca) on the reduction of wuestite into alpha-iron and their catalytic performance for ammonia synthesis. The use of promoters appears to have a positive effect on the wuestite-derived catalyst in ammonia synthesis. The promoters seemingly act as a binder for wuestite grains and impede the reduction and disproportionation events of wuestite precursors resulting in an increased catalytic performance. This effect is associated with an increase of surface area and mesoporosity. The study delivers new insights into the interplay of structure and promoters in wuestite-based catalysts.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: WOS:000753620200004
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Operando-Analytics of Electrochemical Energy Storage > Chair Operando-Analytics of Electrochemical Energy Storage - Univ.-Prof. Dr. Thomas Lunkenbein
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 12 Jun 2025 12:33
Last Modified: 04 Jul 2025 11:31
URI: https://eref.uni-bayreuth.de/id/eprint/93682