Thermally sprayed wire-mesh catalysts for the purification of flue gases from small-scale combustion of bio-fuel Catalyst preparation and activity studies

摘要: Catalytically active wire meshes were used to combust different pollutants present in flue gases from bio-fuel combustion, e.g. CO, propylene, terpenes and tar. Alumina was spray-deposited onto of Kanthal AF (8-20 Tayler mesh) with a plasma spray equipment. The specific surface area the ceramic layer increased through wash coating, in-situ precipitation or sol-treatment. catalytically materials consisted precious metals (Pd/Pt) metal oxides (V2O5/CuO) added matrix an impregnation technique. combustion most cases severely limited by external mass transfer. effects loading material only significant reaction controlled domain. In transfer domain conversion affected flow conditions meshes. CO hydrocarbons effectively combusted at temperatures below 773 on Pd/Pt-catalyst. catalyst performance not presence water vapour carbon dioxide low oxygen concentrations. Similar experiments performed commercial monolith it can be concluded that mass-transfer superior. Tar-residues, soot particulates charcoal particles over Pd/Pt-doped oxide-catalyst (V2O5/CuO). (Less)