Decomposition of N<sub>2</sub>O by Ruthenium Catalysts – RuO<sub>2</sub> as Active Phase on Non‐Reducible Supports
Abstract Ruthenium has been supported on specifically chosen non‐reducible supports (Al 2 O 3 , SiO 2 , Al 2 O 3 ‐SiO 2 mixed oxides, Mg/ZnAl 2 O 4 spinel, and AlF 3 ), and these catalysts have been tested in the decomposition of nitrous oxide, N 2 O, to identify the catalytically active phase of ruthenium. Pure, bulk ruthenium dioxide, RuO 2 , and isolated Ru surface complexes have been synthesized and investigated for comparison. The catalysts were characterized by X‐ray diffraction, H 2 chemisorption, N 2 physisorption, temperature‐programmed reduction, and desorption (TPR/TPD) and in situ infrared spectroscopy (IR). All aimed experiments strongly indicate that the decomposition of N 2 O occurs on ruthenium dioxide, RuO 2 , instead of metal particles. H 2 pre‐reduction to Ru metal has inhibitory effects for all oxygen‐containing supports. The activity increases with the dispersion of ruthenium oxide. Bulk RuO 2 showed the best catalytic performance.
Authors
- Xiaoqiao Zhang (ORCID: https://orcid.org/0000-0002-1422-9709)
- Klaus Köhler (ORCID: https://orcid.org/0000-0003-3008-7875)
- F.J. Boch
- Simon Nickl (ORCID: https://orcid.org/0000-0002-5451-3982)
- Jian Zheng (ORCID: https://orcid.org/0000-0003-3444-4163)
Institutions
- Sinopec (China) (CN)
- Sichuan University (CN)
- Technical University of Munich (DE)
- Sichuan University of Science and Engineering (CN)
Publication Details
- Journal
- ChemCatChem
- Published
- 2024-08-11
- DOI
- https://doi.org/10.1002/cctc.202400347
- Citations
- 3
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 0.35