Nitrogen oxide is synthetized from a N2-35 % O2 mixture flowing (22 Nl/h) through a microwave discharge. The total pressure is equal to 50 torr. The optimal value of energy consumption, equal to 28 MJ/kg NO, is obtained with catalyst such as MoO3. Results are improved by 53 % in comparison with the industrial process used at present, and by 78 % in comparison with those obtained with a plasma jet arc generator

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A far cold remote nitrogen (FCRN) plasma, eventually doped with oxygen, was used to modify the surface properties of a polyethylene (PE) powder. The process associates both remote plasma and fluidized bed technologies. Two applications are described. The first one, for increasing the hydrophilic character of PE, only requires a single plasma treatment. The second application involves FCRN plasma polymerization of 1,1,3,3-tetramethyldisiloxane mixed with oxygen to obtain a hydrophobic film on the powder surface. The wettability evolution of the PE powder was followed by contact angle measurements (Washburn method) versus different experimental parameters. The surface modifications induced by the treatments were studied by XPS.

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