Plasma reforming and coupling of methane with carbon dioxide

Plasma reforming and coupling of methane with carbon dioxide using a point-to-point typo of reactor have been invested. A feed mixture of CH(4) and CO(2) could be converted mainly to CO, H(2), and C(2)H(2) at atmospheric pressure and without external heating except plasma heating. Under a condition of 200 mL/min of CH(4) and CO(2) (CH(4):CO(2) volume ratio, 50:50), a 2.5 min discharge gap, and a pulse frequency of 10.3 kPPS, CH(4) and CO(2) conversion, CO and C(2)H(2) selectivities, H(2)/CO ratio, and (CH(4) + CO(2)) conversion efficiency were 65.9% and 57.8%, 85.9% and 11.3%, 0.99, and 2.4 mmol/kJ, respectively. C(2)H(2) selectivity and H(2)/CO ratio could be moderated by changing CH(4) concentration in the feed mixture. The influence, of methane concentration and pulse frequency on product selectivity and plasma energy efficiency was evaluated. A brief economic evaluation of this process was given. The coproduction of acetylene of high value remarkably improved the production of synthesis gas (CO + H(2)) from carbon dioxide reforming of methane, which could also contribute the emission reduction of global warming gas CO(2).