Journal of Inorganic Materials

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Preparation and Characterization of Wire-mesh Catalyst Coated by La0.8Sr0.2MnO3

XIE Jing, LU Han-Feng, LIU Hua-Yan, LI Qiu-Ju, CHEN Yin-Fei   

  1. (State Key Laboratory Breeding Base of Green Chemistry-SynthesisTechnology, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, China)
  • Received:2006-11-27 Revised:2007-01-09 Online:2007-11-20 Published:2007-11-20
  • Contact: CHEN Yin-Fei

Abstract: A well-adhered and uniform Al2O3/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 binding strength of surface layer were investigated. In addition, La0.8Sr0.2MnO3 obtained from the method of co-deposition were wash-coated onto the Al2O3/Al-wire mesh. The wire-mesh catalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Brunauer-Emmett-Teller (BET). The results show that the La0.8Sr0.2MnO3 is combined strongly with wire mesh and only lost 5.0wt% after 30min vibration, and its BET surface area reaches 119.4m2/g when mixed with gamma-Al2O3. Then the wire-mesh catalysts were applied for catalytic combustion of toluene, the La0.8Sr0.2MnO3 coated onto wire mesh shows good activity, and the toluene can be cleared up at 400℃ in high space velocity and high concentration condition.

Key words: metal wire mesh, electrophoretic deposition, La0.8Sr0.2MnO3, catalytic combustion

CLC Number: 

  • O643