“…Thus, there is no thermal reaction at these conditions and the discharge supplies the energy necessary for reaction. The authors' previous investigation (Ruppel et al, 1969a), using the water-gas shift reaction (H20 + CO = H2 + C02), indicated that the discharge is necessary in that case also, and further that the quartz walls of the ozonizer are probably not involved. By analogy, it appears that the ethylenesteam reaction in an ozonizer discharge is also a homogeneous gas phase reaction.…”