Extended Data Fig. 10: Promotion of molybdenum-based catalysts.
From: Promoting active site renewal in heterogeneous olefin metathesis catalysts
a, The promotion factor for propylene self-metathesis (ca. 26 at 1.5% i4ME) at 200 °C over 1.5%MoSOMC catalyst. b, The promotion factor for propylene self-metathesis (ca. 68 at 1.5% i4ME) at 200 °C over 1.4 wt% MoO3/SiO2 WI catalyst. Reaction conditions: 20 mg catalyst, calcined at 400 °C under 40 mL/min air for 3 h and pretreated at 500 °C under 100 mL/min He for 3 h, T = 200 °C, 50% propylene with indicated percent of i4ME in helium balance, 50 mL/min total flow rate.
