Development of a cataluminescence-based method for rapid screening of de-NOxcatalysts

Abstract

Here we report a cataluminescence-based method in the combinatorial discovery of active catalysts for NO reduction by C₃H₆. This method is based on the fact that NO reduction generates cataluminescence emission on the surface of various metal catalysts supported on BaO/Al₂O₃, whose intensity is correlated to the activity of the catalyst. The catalytic activities of the catalysts were evaluated in parallel by both the cataluminescence method and a micro-reactor evaluation system. The correlation coefficients are in the range of 0.676–0.9236 for the two methods and all above 0.632 at the confidence level 95% in the temperature region of 250–500 °C, indicating that the cataluminescence method can be applied to the evaluation of the catalytic activity of de-NO_x catalysts.