Reaction Kinetics and Catalysis Letters, Vol.92, No.1, 11-17, 2007
Effect of water in the precursor solution on the catalytic property of LaMnAl11O19 high temperature combustion catalyst
Manganese-substituted lanthanum hexaaluminates were prepared by the sol-gel method. The effect of water content on the catalyst preparation was examined. Large water content caused a rapid decrease in the surface area. When the R (R is the mole ratio of H2O/Al(OC3H7)(3)) is equal to 1.5, the catalyst retains a specific surface area of 13.5 m(2) g(-1) and shows higher activity in CH4 combustion.