IHEP OpenIR
Identifying the descriptor governing NO oxidation on mullite Sm(Y, Tb, Gd, Lu)Mn2O5 for diesel exhaust cleaning
Li, HB; Wang, WH; Qian, XY; Cheng, YH; Xie, XJ; Liu, JY; Sun, SH; Zhou, JG; Hu, YF; Xu, JP; Li, L; Zhang, Y; Du, XW; Gao, KH; Li, ZQ; Zhang, C; Wang, SD; Chen, HJ; Zhao, YD; Lu, F; Wang, WC; Liu, H; Zhao YD(赵屹东)
2016
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
EISSN2044-4761
Volume6Issue:11Pages:3971-3975
SubtypeArticle
AbstractThe current fast selective catalytic reduction (fast-SCR) technology shows effectiveness in converting diesel engine generated nitrogen oxides (NOx) to environmentally benign nitrogen (N-2) with the aid of the precious metal catalyst platinum. Driven by the previous finding of the low-cost mullite's great superiority over Pt in terms of NO oxidation, a series of Mn-based oxides Sm(Y, Tb, Gd, Lu)Mn2O5 are synthesized to identify a general descriptor that governs the catalytic performance. Utilizing soft X-ray absorption characterization and molecular orbital theory, here, we show that the catalytic activity difference presents little dependence on the 3d electron occupancy when the A site element is varied (Sm, Tb, Y, Gd, Lu). Instead, strong p-d hybridization between lattice O and octahedral Mn leads to weak bonding strength between external O* and pyramid Mn and essentially increases the catalytic activity for converting NO to NO2.
DOI10.1039/c5cy01798j
Indexed BySCI
Language英语
WOS IDWOS:000378276100035
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/248096
Collection中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Li, HB,Wang, WH,Qian, XY,et al. Identifying the descriptor governing NO oxidation on mullite Sm(Y, Tb, Gd, Lu)Mn2O5 for diesel exhaust cleaning[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(11):3971-3975.
APA Li, HB.,Wang, WH.,Qian, XY.,Cheng, YH.,Xie, XJ.,...&赵屹东.(2016).Identifying the descriptor governing NO oxidation on mullite Sm(Y, Tb, Gd, Lu)Mn2O5 for diesel exhaust cleaning.CATALYSIS SCIENCE & TECHNOLOGY,6(11),3971-3975.
MLA Li, HB,et al."Identifying the descriptor governing NO oxidation on mullite Sm(Y, Tb, Gd, Lu)Mn2O5 for diesel exhaust cleaning".CATALYSIS SCIENCE & TECHNOLOGY 6.11(2016):3971-3975.
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