Reaction pathways of methane conversion in dielectric-barrier discharge

Alkane Activation at Ambient Temperatures: Unusual Selectivities, CC, CH Bond Scission versus CC Bond Coupling

“…Selectivity to combustion products (CO x ) was about 10 %. As often observed during alkane activation by plasma, [27,28] we observed ethyne (6 %) in the product stream. Most remarkably, very high selectivity to !…”

Propane Conversion at Ambient Temperatures C–C and C–H Bond Activation Using Cold Plasma in a Microreactor

“…Two routes are often suggested. Firstly, ethyne can be formed by extensive dehydrogenation of C 2 species present during methane conversion [37]. We also observe C 2 species during our experiments (see Fig.…”

Decomposition of greenhouse gases by plasma

“…By kinetic calculation, Indarto et al (2005b) showed that the concentration of ÁCH 3 radical (ÁCH 3 ) and hydrogen atom (H) was increased sharply just after the initiation of plasma reaction, then ÁCH 3 was consumed and reacted to form higher mass molecules. An interesting result from Kim et al (2003aKim et al ( , 2003b, and majority of papers (Indarto et al 2006f, 2008, is that the coupling reactions occurred and would be followed by dehydrogenation reactions.…”

“…Diamy et al (2001;Legrand et al 1997Legrand et al , 1999 found that the acetylene formed the majority of the products when corona-like discharge was used. Other groups (Kim et al 2003a(Kim et al , 2003bJeong et al 2001;Indarto et al 2008) found ethane (C 2 H 6 ) as the major products although the distribution could be different with some process manipulations or optimization. By kinetic calculation, Indarto et al (2005b) showed that the concentration of ÁCH 3 radical (ÁCH 3 ) and hydrogen atom (H) was increased sharply just after the initiation of plasma reaction, then ÁCH 3 was consumed and reacted to form higher mass molecules.…”

“…This characteristic made it suitable for chemical synthesis selection. Methane utilization using glow discharge (Diamy et al 2001;Legrand et al 1997Legrand et al , 1999, dielectric barrier discharge (Kado et al 2004;Zhang et al 2003;Hwang et al 2003, Kim et al 2003a2003b, Jeong et al 2001, Larkin et al 2001, corona (Legrand et al 1997, Liu et al 1997, spark (Legrand et al 1997), arc plasma-jet (Coltrin and Dandy 1993), radio frequency plasma (Savinov et al 2004) and thermal plasma (Fabry et al 2001, Kim 2004) have been investigated already. Other parameters of plasma methane reaction, such as plasma power generator (Yao et al 2001, Song et al 2004a, catalyst process-assisted (Kim et al 2004, water vapor injection (Hijikata et al 1999) were also investigated experimentally.…”