Fig. 4
From: Control of coordinatively unsaturated Zr sites in ZrO2 for efficient C–H bond activation

Comparison with literature data and durability. a Space time yield of propene (STY(C3H6)) obtained over ZrO2 and the most active catalysts from previous studies28,29,30,31,32,33,34,35,36,37,38,39,40,41,42 (Supplementary Table 3). The data at propane conversion above 25% were considered. b The amount of propene (m(C3H6)) formed within each 30 min PDH cycle in a series of 70 PDH/regeneration cycles at 550, 600 and 625 °C with WHSV of 1.57, 6.28 and 9.42 h−1, respectively. ZrO2 is the catalyst with the highest S(C3H6) in Fig. 1b