Preparation and Characterization of Wire-mesh Catalyst Coated by La_(0.8)Sr_(0.2)MnO_3

A well-adhered and uniform Al_2O_3/Al layer with only 0.5wt% lost after 30min vibration was formed on the 316L wire mesh surface after electrophoretic deposition and thermal treatment.The effects of concentration of additives,the way of applied voltage,temperature of thermal treatment on the bind- ing strength of surface layer were investigated.In addition,La_(0.8)Sr_(0.2)MnO_3 obtained from the method of co-deposition were wash-coated onto the Al_2O_3/Al-wire mesh.The wire-mesh catalysts were char- acterized by X-ray diffraction(XRD),scanning electron microscope(SEM),Brunauer-Emmett-Teller (BET).The results show that the La_(0.8)Sr_(0.2)MnO_3 is combined strongly with wire mesh and only lost 5.0wt% after 30min vibration,and its BET surface area reaches 119.4m~2/g when mixed withγ-Al_2O_3. Then the wire-mesh catalysts were applied for catalytic combustion of toluene,the La_(0.8)Sr_(0.2)MnO_3 coated onto wire mesh shows good activity,and the toluene can be cleared up at 400℃in high space velocity and high concentration condition.