Work

Decomposition of N2O by Ruthenium Catalysts – RuO2 as Active Phase on Non‐Reducible Supports

Year: 2024

Type: article

Abstract: Ruthenium has been supported on specifically chosen non‐reducible supports (Al2O3, SiO2, Al2O3‐SiO2 mixed oxides, Mg/ZnAl2O4 spinel, and AlF3), and these catalysts have been tested in the decomposition of nitrous oxide, N2O, to identify the catalytically active phase of ruthenium. Pure, bulk ruthenium dioxide, RuO2, and isolated Ru surface complexes have been synthesized and investigated for comparison. The catalysts were characterized by X‐ray diffraction, H2 chemisorption, N2 physisorption, temperature‐programmed reduction, and desorption (TPR/TPD) and in situ infrared spectroscopy (IR). All aimed experiments strongly indicate that the decomposition of N2O occurs on ruthenium dioxide, RuO2, instead of metal particles. H2 pre‐reduction to Ru metal has inhibitory effects for all oxygen‐containing supports. The activity increases with the dispersion of ruthenium oxide. Bulk RuO2 showed the best catalytic performance.

Source: ChemCatChem

DOI: 10.1002/cctc.202400347

Authors: Xiaoqiao Zhang, Jian Zheng, Florian Johannes Boch, Simon Nickl, Klaus Köhler

Institutions: Sinopec (China), Technical University of Munich, Sichuan University

Language: English

Topic: Catalytic Processes in Materials Science

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,330

OpenAlex ID: W4401498012

FWCI: 0.576

Cites: 51

Cited by: 6

Related to: 10