Study on the Reaction Mechanism for Soot Oxidation Over TiO2 or ZrO2-supported Vanadium Oxide Catalysts by Means of In-situ UV-Raman

• Published in: Catalysis letters Vol. 120; no. 1-2; pp. 148 - 153
• Main Authors: Liu, Jian, Zhao, Zhen, Liang, Peng, Xu, Chunming, Duan, Aijun, Jiang, Guiyuan, Lin, Wenyong, Wachs, Israel E.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.01.2008; Springer; Springer Nature B.V
• Subjects: Catalysis; Catalysts; Chemistry; Chemistry and Materials Science; Exact sciences and technology; Gas streams; General and physical chemistry; Industrial Chemistry/Chemical Engineering; Nitrogen dioxide; Organometallic Chemistry; Oxidation; Physical Chemistry; Raman spectroscopy; Reaction mechanisms; Soot; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Titanium dioxide; Vanadium oxides; Zirconium dioxide; UV-Raman; Reaction mechanism; Supported vanadium oxide; In-situ; Soot; Catalyst; Heterogeneous catalysis; Supported vanadium oxide, Catalyst; Zirconium oxide; In situ; Transition element compounds; Vanadium oxide; Oxidation; UV-Raman, In-situ; Titanium oxide; Supported catalyst

The reaction mechanisms for diesel soot oxidation over V 4 /ZrO 2 or V 4 /TiO 2 oxide catalysts were studied by the means of in-situ UV-Raman spectroscopy. The results indicate that the formation of surface oxygen complexes (SOC) is a key step and the SOC species mainly exist as carboxyl groups. The...