fig6

Figure 6. Effects of (A) catalyst amounts and (B) stirring speed on the epoxidation of AAL over Re-Ti-MWW. Reaction conditions: catalyst, 1 g (for Figure 6B); temperature, 313 K; AAL/H₂O₂ molar ratio, 1.5; H₂O/AAL mass ratio, 4; WHSV(H₂O₂) = 0.4 h^-1; 500 rpm (for Figure 6A). The data were the average values at 45 h after the reaction reached a steady state. AAL: Allyl alcohol; WHSV: weight hourly space velocity.