Oxidation of 2-heptanone in air by a DBD-type plasma generated within a honeycomb monolith supported Pt-based catalyst

Autor:	C. Ayrault, Antoine Rousseau, Jean-Michel Tatibouët, F. Jorand, Stéphane Pasquiers, Joël Barrault, N. Blin-Simiand
Rok vydání:	2004
Předmět:	geography Ozone geography.geographical_feature_category Inorganic chemistry Analytical chemistry chemistry.chemical_element General Chemistry Nonthermal plasma Heterogeneous catalysis Catalysis Heptanone chemistry.chemical_compound chemistry Monolith Platinum Carbon monoxide
Zdroj:	Catalysis Today. 89:75-81
ISSN:	0920-5861
DOI:	10.1016/j.cattod.2003.11.042
Popis:	A plasma-catalyst reactor was used to eliminate a low concentration (180 ppm) of 2-heptanone in air by total oxidation. This VOC is representative of a class of odorous ketones. A DBD-type plasma was generated through a platinum-based catalyst supported on an alumina wash-coated honeycomb monolith by means of a high voltage bi-polar pulsed excitation. The 2-heptanone elimination efficiency increases with the energy density. More than 97% of 2-heptanone conversion is observed, in dry air condition for an energy density of 200 J/L. An important synergy effect has been observed between cold plasma and catalyst, the 2-heptanone conversion remaining less than 50% on an uncoated monolith, even at an energy density value higher than 500 J/L. The presence of water (3 mol%) in the gas phase, slightly decreases the efficiency of the 2-heptanone elimination, but strongly decreases the ozone formation in the 100–300 J/L energy density range.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b41879258152754490d62d7f98e76c8d https://doi.org/10.1016/j.cattod.2003.11.042 Zobrazit plný text záznamu Full Text from ScienceDirect