A flow-type nonequilibrium plasma microreactor has been developed for direct synthesis of liquid oxygenates from partial oxidation of methane near 0 °C at atmospheric pressure. Plasma microreactor provides extreme quenching environment with condition created to stimulate the condensation of oxygenates on the walls and later removed by water injection to prevent full oxidation. The removal of incomplete oxidation products prevents further oxidation with excited species in the discharge region. One-pass 15 % liquid oxygenate yield has been obtained with main components of methanol, formaldehyde and formic acid. Hydrogen peroxide has been found as key component which oxidizes post-discharge product as well as increasing liquid oxygenate yield if injected into discharge. Reaction mechanism, role of water and hydrogen peroxide injections have been largely clarified from experiments with D2O and D2O2 isotopes.
|Title of host publication||American Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers|
|Publication status||Published - 1 Dec 2009|
|Event||238th ACS National Meeting 2009: Fall 2009 - Washington, United States|
Duration: 16 Aug 2009 → 20 Aug 2009
Conference number: 238
|Conference||238th ACS National Meeting 2009|
|Period||16/08/09 → 20/08/09|