Preparation of Ce_(1-x)Ni_xO_2/Al_2O_3/FeCrAl Catalysts and Performance for Catalytic Combustion of Methane

A series of Ce_(1-x)Ni_(x)O_2/Al_2O_3/FeCrAl(x=0.1-0.3),CeO_2/Al_2O_3/FeCrAl and NiO/Al_2O_3/FeCrAl monolith catalysts were prepared using the FeCrAl alloy foils as support,Al_2O_3 as washcoat layer and Ce_(1-x)Ni_xO_2 solid solution,CeO_2 and NiO as active component.The catalytic activity of the catalysts for the combustion of methane was evaluated in a conventional quartz flow reactor.The structure of the catalysts was characterized using XRD,SEM and H_2-TPR.The results indicate that Ce_(1-x)Ni_(x)O_2 solid solution was well dispersed on the surface of the catalyst support.The Ce_(1-x)Ni_(x)O_2/Al_2O_3/FeCrAl catalysts had a good catalytic activity and thermal stability for the combustion of methane.The CeO_2/Al_2O_3/FeCrAl and NiO/Al_2O_3/FeCrAl catalyst had a well initial catalytic activity,but the thermal stability for the combustion of methane was not good.There were a strong interaction among the Ce_(1-x)Ni_xO_2 solid solutions and the Al_2O_3 washcoat and the FeCrAl alloy foils support.