Extended Data Fig. 2: Kinetic studies of catalysts prepared by wet impregnation.
From: Promoting active site renewal in heterogeneous olefin metathesis catalysts
a, Reaction order plot at T = 350 °C with y(C3H6) = 0.3 to 0.6. b, Arrhenius plot at y(C3H6) = 0.5 with T = 320 °C to 350 °C. c, Arrhenius plots of propylene metathesis without promoter (blue) and with promoter (1.28 mol% 4ME + 0.22 mol% i4ME, yellow) at y(C3H6) = 0.5 with T = 230 °C to 260 °C. d, Apparent reaction order plots of propylene metathesis without promoter (blue) and with promoter (1.28 mol% 4ME + 0.22 mol% i4ME, yellow) at T = 250 °C with y(C3H6) = 0.2 to 0.5. e, Apparent reaction order plot of promoter at T = 250 °C, y(C3H6) = 0.5 with y(promoter) = 0.7 to 1.5 mol%. Reaction conditions: 10 mg 15% WOx/SiO2 (industrial) or 20 mg 3% WOx/SiO2 IWI, pretreated at 550 °C under 100 mL/min He for 1 h, 50 mL/min total gas flow rate (propylene + balance He or He saturated with promoter, WHSV = 0.0019 mol C3H6/gcat.s.
