title: Detailed characterization of 2-heptanone conversion by dielectric barrier discharge in N(2) and N(2)/O(2) mixtures.
abstract: The products of 2-heptanone conversion by dielectric barrier discharge plasma are analyzed under different conditions: alternating current (ac) or pulsed mode of excitation, variable energy, variable composition of the carrier gas. The efficiency of the conversion is higher using a pulse excitation mode than an ac mode. With a small oxygen percentage (about 2-3%) added to nitrogen, 2-heptanone is about 30% more efficiently removed than in pure nitrogen, while the 2-heptanone removal decreases with an oxygen percentage higher than 3%. A new analysis method, based on chemical ionization mass spectrometry, is used for volatile organic compound detection along with chromatography. Several products issued from 2-heptanone conversion with ac excitation are identified in nitrogen and in air, and a chemical scheme is proposed to explain their formation and their treatment by the discharge. It appears that byproducts are issued not only from oxidation reactions, but also from C-C bond cleavage by collisions with electrons or nitrogen excited states.
authors: Plasma Physics Department, Faculty of Physics, A1.l. Cuza University, Bd. Carol I, No. 11, 700506 Iasi, Romania.
authors: Alina Silvia
authors: AS
authors: Chiper
authors: Nicole
authors: N
authors: Blin-Simiand
authors: Michel
authors: M
authors: Heninger
authors: Hélène
authors: H
authors: Mestdagh
authors: Pierre
authors: P
authors: Boissel
authors: François
authors: F
authors: Jorand
authors: Joël
authors: J
authors: Lemaire
authors: Julien
authors: J
authors: Leprovost
authors: Stéphane
authors: S
authors: Pasquiers
authors: Gheorghe
authors: G
authors: Popa
authors: Christian
authors: C
authors: Postel
mesh_terms: D017097:Electric Impedance; D007659:Ketones / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*
chemical_list: D007659:Ketones; C011917:2-heptanone; D009584:Nitrogen; D010100:Oxygen