The s~ecific catalytic activity of rutile at a toluene concentration of 0.2 vol. % (3.3" 10 -9 mole/mZsec at 650 K; I.I-I0 -e mole/m2sec at 700 K) was found to be an order higher than the anatase activity. At 430-650 K only complete oxidation occurred on rutile; beginning at ~650 K, benzoic acid was formed, the selectivity with respect to which reached 40% at 700 K; at ~670K insignificant amounts of benzaldehyde also appeared in the products. The C02 formation rate at 650 K did not depend on the toluene concentration in the range of 0.2-0.6 vol. %. The catalyst operated stably, its color did not change, and adsorption of the products was not obserbed. By contrast, anatase began to darken during catalysis and became brown at -623 K. The composition of the products was also different than in the reaction on rutile: benzaldehyde appeared on the starting anatase specimen in addition to CO2 (its formation rate passed through a maximum at 623 K (selectivity of ~40%). Benzoic acid and unidentified (poorly separated from the acid) substances were also formed in small amounts. When the temperature was decreased to 573 K, the activity of the specimen decreased somewhat, with benzoic acid becoming the main product of mild oxidation. The rate of formation of benzoic acid at 673 K was proportional to the toluene concentration, the rate of complete oxidation depended on it little, and the benzaldehyde formation rate passed through a maximum. The spent catalyst was regenerated by heating in air at 750 K. Thus, rutile and anatase differ significantly in activity, selectivity, and the nature of the effect of the reaction medium on the catalyst.