An Investigation on the Principal Paths to Plasma Oxidation of Propylene and NO

作者：Lin, He; Guan, Bin^*; Cheng, Qi; Huang, Zhen

来源：Energy & Fuels, 2010, 24(10): 5418-5425.

DOI：10.1021/ef100451x

• Binding reactions
• Diesel exhausts
• High sulfur contents
• Hydroperoxy radical
• Methyl nitrate
• Nonthermal plasma
• Oxidation products
• Plasma oxidation

Hydrocarbons plasma oxidation combined with fast selective catalytic reduction is a promising technology for treating the diesel exhausts with high sulfur content. In this study, propylene (C3H6) oxidation in a nonthermal plasma process and its effects on NO transition were investigated. The experimental results and the results from simulation based on a simplified model indicated that the binding reactions of O radicals ionizing from O-2 with C3H6 are the trigger reactions, from which carbonyl (HCO) and ethyl radicals (C2H5) are produced and play crucial roles in C3H6 and NO oxidation. It was found that carbon monoxide (CO), carbon dioxide (CO2), formaldehyde (HCHO), acetaldehyde (CH3CHO), formic acid (HCOOH), etc. are the final oxidation products of C3H6 oxidation in the absence of NO. With the presence of NO, peroxy (CH3O2 and C2H5O2), and hydroperoxy radical (HO2) that come from C3H6 oxidation are able to oxidize NO to NO2 efficiently and, meanwhile, induce the reactions that would lead to the formation of many kinds of byproducts such as nitrous oxide (N2O), nitrous acid (HONO), nitric acid (HONO2), methyl nitrite (CH3ONO), and methyl nitrate (CH3ONO2).

• 出版日期2010-10
• 单位上海交通大学