| 摘要 |
<p>The invention relates to a method and a catalyst for removal of nitrogen oxides in a flue gas from a combustion engine or gas turbine by injecting a reducing agent and reducing the ni-trogen oxides in the presence of a catalyst. The catalyst is a zeolite based catalyst on a corrugated monolithic substrate, the substrate has a density of 50- 300g/l and a porosity of at least 50%. The monolithic substrate is a paper of high silica con-tent glass or a paper of E-glass fibre with a layer of diatomaceous earth or a layer of titania, and the catalyst is a Fe-.beta. zeolite.</p> |
