Plasma Enhanced Selective Catalytic Reduction of NOx for Diesel Cars

Abstract

<div class="htmlview paragraph">The potential of dielectric barrier discharges for the reduction of NO emitted from Diesel cars has been investigated. Without additional measures the non-thermal plasma induced oxidation of NO to NO<sub>2</sub> is favored over reduction to N<sub>2</sub> and O<sub>2</sub>. Therefore a combination of plasma and a catalyst for the selective catalytic reduction of NO with ammonia as reducing agent has been tested: An NO conversion of about 70 % was achieved at a temperature as low as 100 °C, which cannot be explained by simply adding the reduction rates obtained by plasma and by selective catalytic reduction.</div>