Abstract
When an activated cokes bed is irradiated by microwave, it is observed that nonequilibrium argon plasma is induced in the downstream of the bed with low electromagnetic power under atmospheric pressure. This paper presents the fundamental behavior as well as direct decomposition performance of nitrogen monoxide (NO) in the microwave plasma without catalysis. Argon plasma was generated stably with a broad distribution in the reaction zone in the downstream of the activated particle packed bed under a microwave field beyond a critical power. NO contained in argon stream was significantly decomposed in the stable plasma and the conversion was achieved over 90% for 1040 ppm inlet NO content without any catalyst and reducing agent. The effect of de-NO conversion was improved by addition of ammonia.
