EFFECT OF ADDITIVES ON THE SURFACE AREA OF OXIDE SUPPORTS FOR CATALYTIC COMBUSTION

Abstract
Effect of additives on the surface area of oxide supports was investigated to use them for combustion catalysts above 1000 °C. An addition of BaO to Al2O3 was found to suppress the decrease of its surface area at elevated temperatures. The maximum surface area, 6.0 m2/g, was obtained for (BaO)0.14(Al2O3)0.86 after calcination at 1450 °C. The effect of BaO on the surface area of alumina is attributed to the formation of BaO·6Al2O3.

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