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10.1038/s41467-025-64243-y http://scihub22266oqcxt.onion/10.1038/s41467-025-64243-y C12532794!12532794 !41102217     free     free     free Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=41102217 &cmd=llinks): Failed to open stream: HTTP request failed! 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Temperature-driven mechanistic transition in propylene oxidation over Pt/CeO(2) ensemble catalysts |pdf=|usr=}}{{41102217 }} gab.com Text Temperature-driven mechanistic transition in propylene oxidation over Pt/CeO(2) ensemble catalysts JO: Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=41102217 #FOAvip Pt/CeO(2) ensemble catalysts are promising for propylene (C(3)H(6)) oxidation in vehicle exhaust, yet identifying the intrinsic active sites and understanding how the metal-support interface evolves at varying reaction temperatures remains contentious. Herein, we demonstrate that H(2)-activated Pt/CeO(2) ensemble catalysts feature metallic Pt ensembles as intrinsic active sites, lowering the 50% conversion temperature by 120?°C after hydrogen activation. Various operando characterization techniques reveal an approximately 170?°C threshold temperature for the dynamic change of the reaction models. Meanwhile, kinetics and theoretical analysis illustrates that oxygen-facilitated dehydrogenation of sp(3) C-H bonds is the rate-determining step. At low temperatures, both C(3)H(6) and O(2) adsorb and activate on metallic Pt, without CeO(2) involvement. Once the temperature exceeds threshold, C(3)H(6) fully covers Pt sites, while O(2) activates over Pt-O-Ce interfaces and participates in dehydrogenation. This study highlights the dynamic nature of oxygen activation, leading to distinct reaction temperature regimes during C(3)H(6) oxidation. Twit Text FOAVip Temperature-driven mechanistic transition in propylene oxidation over Pt/CeO(2) ensemble catalysts ????Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=41102217 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=41102217 #FOAvip English Wikipedia <ref>{{Cite pmid|41102217 }}</ref> Temperature-driven mechanistic transition in propylene oxidation over Pt/CeO(2) ensemble catalysts #MMPMID41102217 Li Z ; Chen X ; Lv Y ; Dai S ; Chang H ; Li Z ; Ye K ; Liu F ; Ma L ; Yan N Nat Commun 2025[Oct]; 16 (1 ): 9199 PMID41102217 show ga Pt/CeO(2) ensemble catalysts are promising for propylene (C(3)H(6)) oxidation in vehicle exhaust, yet identifying the intrinsic active sites and understanding how the metal-support interface evolves at varying reaction temperatures remains contentious. Herein, we demonstrate that H(2)-activated Pt/CeO(2) ensemble catalysts feature metallic Pt ensembles as intrinsic active sites, lowering the 50% conversion temperature by 120?°C after hydrogen activation. Various operando characterization techniques reveal an approximately 170?°C threshold temperature for the dynamic change of the reaction models. Meanwhile, kinetics and theoretical analysis illustrates that oxygen-facilitated dehydrogenation of sp(3) C-H bonds is the rate-determining step. At low temperatures, both C(3)H(6) and O(2) adsorb and activate on metallic Pt, without CeO(2) involvement. Once the temperature exceeds threshold, C(3)H(6) fully covers Pt sites, while O(2) activates over Pt-O-Ce interfaces and participates in dehydrogenation. This study highlights the dynamic nature of oxygen activation, leading to distinct reaction temperature regimes during C(3)H(6) oxidation. äTemperature-driven mechanistic transition in propylene oxidation over (epmc).pdf DeepDyve Pubget Overpricing