Stable boron catalysis via B-O-Ce linkage for oxidative dehydrogenation of propane

Supported boron oxide catalysts show great potential in propane oxidative dehydrogenation yet suffer severe hydrolytic deactivation at high temperatures. Here, an interfacial bond gradient strategy is proposed to stabilize boron-based catalysts. CeO 2 anchored on γ-Al 2 O 3 modulates local bonding and firmly immobilizes active boron species. The catalyst achieves over 40% propane conversion, 80% olefin selectivity and superior stability within 200 h. Formed B-O-Ce interfaces trigger oriented electron transfer and enhance surface hydrophobicity, raising hydrolysis activation energy and suppressing active site loss. This interfacial engineering offers a universal route to design robust catalysts for alkane transformation.