Catalyseur athermique pulvérulent

Catalyseur athermique pulvérulent comprenant, en pourcentage massique par rapport à sa masse totale : Entre 27% et 30% de dioxyde de titane TiO2 photo-activé Entre 11% et 17% d'oxyde de manganèse MnO, Entre 55% et 59% de zéolithe synthétique hydrophile de type A. The invention refers to a method for manufacturing a catalytic device, with the steps: a) providing a first catalyst having photocatalytic activity, a second catalyst, different from the first catalyst, and an adsorbent, each in a powdered state, b) mingling the first catalyst, the second catalyst and the adsorbent to form a catalytic composition and suspending them in a suspension liquid to form a slurry, and c) repeatedly coating the slurry onto a solid grid-like carrier having a plurality of through holes, configured to allow a gas to flow through the carrier, and evaporating the suspension liquid.