Wet Air Oxidation of aAetic Acid over Platinum Catalysts Supported on Cerium-based Materials: Influence of Metal and Oxide Crystallite Size

0323539 - ÚCHP 2009 RIV US eng J - Journal Article
Gaálová, Jana - Barbier Jr., J. - Rossignol, S. - Mesnard, D. - Duprez, D. - Kappenstein, C.
Wet Air Oxidation of aAetic Acid over Platinum Catalysts Supported on Cerium-based Materials: Influence of Metal and Oxide Crystallite Size.
[Vlhká oxidace vzduchem kyseliny octové na platinových katalyzátorech s ceriovými nosiči : vliv kovu a velikosti krystalických částí oxidu.]
Journal of Catalysis. Roč. 251, č. 1 (2007), s. 172-181. ISSN 0021-9517. E-ISSN 1090-2694
Institutional research plan: CEZ:AV0Z40720504
Keywords : platinum catalyst * cwao * ceria
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 4.737, year: 2007

The results demonstrate poisoning of the catalysts during the CWAO experiments due to the formation of carbonate species. This limits the performance of the mixed oxide-based catalysts displaying the highest OSC values. A correlation was established between the OSC of the catalysts and the formation of carbonate species. Nevertheless, there is no correlation between OSC and catalytic activity, with the ceria-based samples showing the highest reaction rate. An optimal platinum crystallite size is required to achieve the highest conversion of acetic acid in terms of turnover frequency values.

Oxidace vzduchem kyseliny octové na ceriových katalyzátorech je favorizovaná přítomností platiny. Pro maximální aktivitu je potřebná optimální velikost krystalických částí oxidu.
Permanent Link: http://hdl.handle.net/11104/0171461