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- W4320169256 abstract "Redox properties of CeO2 materials have a major impact on the NO oxidation to NO2, which is a crucial step for selective-catalytic-reduction (SCR) because NO2 can trigger the “Fast SCR” reaction. Despite decades of investigations, the mechanism of NO oxidation to NO2 at the CeO2 surface is still under debate, the controversy is whether the key oxidants are the CeO2 catalyst’s high-valence metal ions or the O2 molecules (in the reactant gas) which could be activated by the reducing CeO2 surface oxygen vacancies (Ovac)? We perform density-functional-theory (DFT) simulations and synthesize CeO2 catalysts for in situ spectroscopy experiments, transient-reaction-analysis (TRA) experiments, and isotopic experiments, to reveal the NO oxidation mechanism and achieve atomic-level understanding. Our results show that Ovac at the CeO2 surface strongly interacts with O2 gas, leading to the formation of a key oxidizing intermediate O* (“*” means an adsorbed state). TRA experiments, isotopic experiments, and in situ spectroscopy results further provide evidence that O* oxidizes NO to NO2. Given the theoretical–experimental-joint results, we demonstrate that the effective approach, in terms of utilizing the intrinsic catalytic properties of CeO2, should be simultaneously optimizing the surface Ovac concentration and the Ovac’s activity for O2-dimer activation, which provides atomic-scale insights for a rational design of NO-conversion catalysts." @default.
- W4320169256 created "2023-02-13" @default.
- W4320169256 creator A5032098600 @default.
- W4320169256 creator A5034715756 @default.
- W4320169256 creator A5065661976 @default.
- W4320169256 date "2023-03-01" @default.
- W4320169256 modified "2023-09-26" @default.
- W4320169256 title "Investigation of intrinsic catalytic mechanism for NO oxidation to NO2 in CeO2 used for NO removal" @default.
- W4320169256 cites W1491997069 @default.
- W4320169256 cites W1634347145 @default.
- W4320169256 cites W1964829320 @default.
- W4320169256 cites W1968426044 @default.
- W4320169256 cites W1970127494 @default.
- W4320169256 cites W1971930081 @default.
- W4320169256 cites W1973176211 @default.
- W4320169256 cites W1974500622 @default.
- W4320169256 cites W1981368803 @default.
- W4320169256 cites W1985628158 @default.
- W4320169256 cites W2007395042 @default.
- W4320169256 cites W2013095507 @default.
- W4320169256 cites W2013504490 @default.
- W4320169256 cites W2015354450 @default.
- W4320169256 cites W2019037438 @default.
- W4320169256 cites W2020181885 @default.
- W4320169256 cites W2022154156 @default.
- W4320169256 cites W2023584218 @default.
- W4320169256 cites W2035224549 @default.
- W4320169256 cites W2044591029 @default.
- W4320169256 cites W2044741036 @default.
- W4320169256 cites W2044792590 @default.
- W4320169256 cites W2056079701 @default.
- W4320169256 cites W2063184555 @default.
- W4320169256 cites W2084925866 @default.
- W4320169256 cites W2085684222 @default.
- W4320169256 cites W2088840611 @default.
- W4320169256 cites W2088923114 @default.
- W4320169256 cites W2094509829 @default.
- W4320169256 cites W2097436923 @default.
- W4320169256 cites W2100619395 @default.
- W4320169256 cites W2122427541 @default.
- W4320169256 cites W2132235899 @default.
- W4320169256 cites W2161621332 @default.
- W4320169256 cites W2169714463 @default.
- W4320169256 cites W2265552197 @default.
- W4320169256 cites W2286245292 @default.
- W4320169256 cites W2325411101 @default.
- W4320169256 cites W2330384807 @default.
- W4320169256 cites W2330845296 @default.
- W4320169256 cites W2331470795 @default.
- W4320169256 cites W2334393768 @default.
- W4320169256 cites W2466841153 @default.
- W4320169256 cites W2509543230 @default.
- W4320169256 cites W2514304882 @default.
- W4320169256 cites W2607079730 @default.
- W4320169256 cites W2748240755 @default.
- W4320169256 cites W2759611275 @default.
- W4320169256 cites W2770739789 @default.
- W4320169256 cites W2789315836 @default.
- W4320169256 cites W2792195402 @default.
- W4320169256 cites W2805761268 @default.
- W4320169256 cites W2913243102 @default.
- W4320169256 cites W2913710235 @default.
- W4320169256 cites W2922148984 @default.
- W4320169256 cites W2959634834 @default.
- W4320169256 cites W2963145465 @default.
- W4320169256 cites W2964766614 @default.
- W4320169256 cites W2967709337 @default.
- W4320169256 cites W2994130893 @default.
- W4320169256 cites W3007525141 @default.
- W4320169256 cites W3019601207 @default.
- W4320169256 cites W3039791815 @default.
- W4320169256 cites W3042575956 @default.
- W4320169256 cites W3044088382 @default.
- W4320169256 cites W3044441243 @default.
- W4320169256 cites W3081322132 @default.
- W4320169256 cites W3104757682 @default.
- W4320169256 cites W3115402429 @default.
- W4320169256 cites W3116662417 @default.
- W4320169256 cites W3119197545 @default.
- W4320169256 cites W3119305779 @default.
- W4320169256 cites W3127493392 @default.
- W4320169256 cites W3128312195 @default.
- W4320169256 cites W3135661117 @default.
- W4320169256 cites W3158052665 @default.
- W4320169256 cites W3160491030 @default.
- W4320169256 cites W3164756351 @default.
- W4320169256 cites W3166773410 @default.
- W4320169256 cites W3174433227 @default.
- W4320169256 cites W3182825521 @default.
- W4320169256 cites W3193564955 @default.
- W4320169256 cites W3200774230 @default.
- W4320169256 cites W3201526118 @default.
- W4320169256 cites W3212240968 @default.
- W4320169256 cites W3214997826 @default.
- W4320169256 cites W4200286057 @default.
- W4320169256 cites W4212843237 @default.
- W4320169256 cites W4221068162 @default.
- W4320169256 cites W4226189812 @default.