Processus catalytiques dans un réacteur à plasma hors d'équilibre II. Fixation de l'azote dans le système N2-O2

Plasma N2-fixation: 1900–2014

“…With rapid advancement in the understanding of plasma reaction kinetics due to advanced measurement techniques, a good deal of research on plasma nitrogen-fixation has been published by a number of research groups [37][38][39][40][41][42][43][44][45]. Plasma atmospheric nitrogen fixation into nitric oxide has been studied and reported for lab scale processes using air plasma [40,43,46,47], from N 2 -O 2 mixture [37,38,45,48], and in argon; argon-nitrogen and nitrogen plasma [41,48,49]. All these efforts in plasma nitric oxide synthesis are analyzed and reported in following sections, divided in 3 groups: types of plasma reactors, use of catalyst, and improving heat transfer.…”

“…Table 3 summarizes the literature reported for plasma NO synthesis with respect to type of plasma, reactor configurations, power source employed, and the main results in terms of % nitrogen fixed. The main plasma types investigated are electric arc of B-E process [27,50], Radio frequency discharges [51][52][53][54], DC discharges [55][56][57][58], lasers [59,60], microwave discharges [61,62], microwave with electron cyclone resonance discharges [63], glow discharges [64], dielectric discharges [65], Inductively coupled HF discharges [37,45], and Pulsed arc discharges [46,47]. Various configurations of plasma reactors were reported such as Electric arc with expanding reactor geometry [66], reactor with rotating disk [42,43], DC plasma jet [44,58], and setting up different E/P ratio [67].…”

“…Amouroux and co-workers published a series of papers in 1980s on the plasma NO and HCN synthesis in non-equilibrium plasma reactor [37,38,45,70,71]. These studies were conducted on an inductively coupled HF plasma reactor operating at 40 MHz and 1-40 mbar.…”

“…The use of a catalyst in the plasma reactor for the synthesis of nitric oxide has not been investigated thoroughly; very few researchers have reported it [37,48,64,[71][72][73]. Nitric oxide was prepared with catalyst in plasma reactors by Cavadias and Amouroux [37,48,71]. The yield of nitrogen fixation was 8% without catalyst, which was increased to 19% by use of WO 3 as a catalyst [37], refer to Fig.…”

“…Nitric oxide was prepared with catalyst in plasma reactors by Cavadias and Amouroux [37,48,71]. The yield of nitrogen fixation was 8% without catalyst, which was increased to 19% by use of WO 3 as a catalyst [37], refer to Fig. 7.…”