Study of Mechanism for Hexane Decomposition with Gliding Arc Gas Discharge

Abstract

The mechanism of hexane decomposition under gliding arc gas discharge conditions is studied from both qualitative and quantitative analyses of its products for various hexane initial concentrations and different background atmospheres : nitrogen, argon, air (O 2 21% N 2 79% vol.) and N 2 -O 2 mixtures. The decomposition rate, which decreases with increasing hexane initial concentration, can reach 94% when the carrier gas is air. Due to the electron energy consumed by the dissociation of nitrogen, the decomposition rate of hexane in nitrogen is lower than in argon. The radical channel plays a predominant role in the hexane decomposition process. With increasing oxygen concentration in the carrier gas, the hexane decomposition rate increases and promotes the conversion of CO-CO 2 , but it also leads to the formation of NO 2 .

Synthesis of carbon coated tungsten carbide nano powder using hexane as carbon source and its structural, thermal and electrocatalytic properties

“…However, it is difficult to say about the formed intermediate product at such a low-temperature range. By assuming the homogeneous decomposition process of hexane, the possible formed species may be the C-containing intermediate complex compounds and lower hydrocarbon like Methane (CH 4 ), Ethane (C 2 H 6 ), Ethylene (C 2 H 4 ) and Butane (C 4 H 10 ) [48]. The most probable decomposition reactions of hexane products are given below:…”

Nitrogen dioxide formation in the gliding arc discharge-assisted decomposition of volatile organic compounds

“…This study is a continuation of our previous GAD-assisted VOCs decomposition work [18,19,21,22]. NO 2 formation in dry air GAD is mechanistically discussed based on thermodynamic equilibrium calculation and plasma region spectra analysis.…”

“…According to our previous researches [18,19], the concentration of NO 2 in the after discharge effluent could reach a level of several thousands ppm. Kalra et al have reported that the NO x generation in GAD strongly depends on the discharge current [20] according to their DC GAD research.…”

Decomposition of volatile organic compounds using gliding arc discharge plasma

“…These active particles will further react with ethane or benzene and crack it into smaller products to involve the following reactions until totally convert it into small molecules such as CO 2 , CO, and H 2 O. The detailed mechanism can be drawn in Figure 7a,b (Yan et al 2007).…”