J. Phys. IV France 07 (1997) C1-675-C1-676
Synthesis of Barium Hexaferrite and Catalytic Behavior in the Combustion of MethaneA. Favre, N. Guilhaume and A. Pierre
Université Claude Bernard - Lyon I, LACE, UMR 5634 du CNRS, Bât. 303, 43 boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France
Barium hexaferrite doped with iridium was synthesized by two methods : the citrate gel and the polyacrylamide gel methods. The nature of phases obtained and the specific surface area were determined after heat treatments in air at 700°C, 900°C and in air containing 10% humidity at 1200°C. The catalytic activity in the combustion of methane was measured after heat treatment at 900°C. These hexaferrites showed a good catalytic activity after treatment at 900°C. However this catalytic activity and the specific surface disappeared after heat treatment at 1200°C.
© EDP Sciences 1997