Pressurization effect on dry reforming of biogas in kilohertz spark-discharge plasma

Optimized mixed reforming of biogas with O2 addition in spark-discharge plasma

“…1 shows a diagram of the experimental setup. The detailed plasma reactor configuration and experimental procedures were described in detail in our previous papers [5,16,23]. Briefly, a stainless steel tube (as the high-voltage electrode) and a rotary stainless steel disc (as the ground electrode) with a 9-mm gap were placed into a quartz cylinder to compose the plasma reactor.…”

“…As internal standard gases, N 2 and He mixed with the effluent gas from the reactor before flowing into the cold trap. N 2 was used to quantify O 2 and carbon-containing components [5,16,23e26] and He was used to quantify H 2 [5]. After gaseliquid separation, the composition of gaseous products was analyzed online by two gas chromatographs (GCs).…”

“…Â 3 m length). As described in our previous papers [5,16], the conversions of CH 4 ðX CH4 Þ; CO 2 ðX CO2 Þ; O 2 ðX O2 Þ, total-carbon ðX TC Þ and the carbon-based (C-based) selectivities of COðS CO Þ, C 2 H 2 ðS C2H2 Þ and the carbon balance (B C ) can be briefly stated as follows.…”

“…Among the reforming methods, the conventional catalytic method has the disadvantages of the high temperature required and the rapid deactivation of catalysts. A promising alternative is the nonthermal plasma, which is characterized by very high electron temperature but relatively low gas temperature, offering high reactant conversions at low temperatures without catalyst [5,7,8,16]. However, strongly endothermic dry reforming reaction would inevitably result in the high-energy cost.…”

Post-plasma catalytic oxidative CO2 reforming of methane over Ni-based catalysts

“…Nitrogen was used as an internal standard gas to quantify gaseous O 2 , CH 4 , CO 2 , CO, C 2 H 2 , C 2 H 4 and C 2 H 6 , and helium was used to quantify H 2 . The detailed analysis of gaseous products was described in our previous papers [14,23].…”