abstracts - Институт катализа им. Г.К. Борескова

YP-131008023Conversion CO [%]6040204100 100 200 300 400 500 600 700 800Temperature [ 0 C]Figure 2. The influence of gold loading on CO conversion degree:1 – 1% Au/TiO 2 , 2 – 2% Au/TiO 2 , 3 – 5% Au/TiO 2 , 4 – 10% Au/TiO 2The effect of calcination temperature in air on catalysts activity is depicted in figure 3.The higher treatment temperature the lower activity of catalyst is observed.100Conversion CO [%]28060403201400 100 200 300 400 500Temperature [ 0 C]Figure 3. The influence of catalysts temperature of calcination in air on CO conversion:1 – 60 C, 2 – 200 C, 3 – 400 C, 4 – 600 CThe influence of gold loading (1 – 10% Au) after their drying at 60°C and temperature ofcalcination (60 - 400 C) on TPR H2 profiles for impregnated Au/TiO 2 catalysts are presented infigure 4A and 4B. The reduction of gold oxide phase takes place in rather narrow temperaturerange 80 - 140°C. Temperature of calcination higher than 200°C leads to gold oxidedecomposition.452