Atomic rearrangement on YMn2O5 modified Pt-based diesel oxidation catalyst for promoted performance

Unidirectional Electron Transfer on Bismuth-Doped Pt/YMn2O5 for Efficient CO Oxidation as Diesel Oxidation Catalysts

“…Immediately, following the process of temperature increase, the electrons in Pt are excited and transferred into the empty orbitals of CO to realize the adsorption activation process of CO. Then, according to the electron directional transfer property in the Pt–O–Bi structure, the electrons will eventually be transferred to the 5d orbitals of Pt and sequentially migrate to the empty orbitals (π* 2p , σ* 2p ) of CO, thus realizing the rapid adsorption activation of CO. Meanwhile, previous work has shown that the Pt/mullite interface can directly activate oxygen species. ,, That is, the Pt–O–Bi structure can directly activate the reaction of oxygen species (activated by O v at the interface) with CO adsorbed on Pt. The direct reaction of activated molecules on Pt–O v –Bi reduces the migration of reactive species and accelerates the desorption of the reaction intermediates (formate and carbonate) (Figures e and S17), which ultimately leads to the rapid oxidation of CO.…”

Mn‐Based Mullites for Environmental and Energy Applications

“…[14,[16][17][18] It is worth noting that Mn-based mullite oxides, as a new type of ternary catalyst, have been applied in environmental treatment and energy conversion in the last decade. [19][20][21][22][23][24][25][26][27] Natural mullite is a mineral composed of aluminum silicates (3Al 2 O 3 •2SiO 2 ), and it was discovered at the contact between overheated magma intrusion and deposits rich in Al 2 O 3 . [28] Since its discovery a century ago, it has gained great interest in various fields as shown in Figure 1.…”