Silver-modified manganite and ferrite perovskites for catalyzed gasoline particulate filters

被引：49

作者：

Hernandez, Willinton Y. ^{[1
]}

Lopez-Gonzalez, Diego ^{[1
]}

Ntais, S. ^{[1
]}

Zhao, C. ^{[1
]}

Boreave, A. ^{[1
]}

Vernoux, Philippe ^{[1
]}

机构：

[1] Univ Claude Bernard Lyon 1, Univ Lyon, Inst Rech Catalyse & Environm Lyon, CNRS,UMR 5256, 2 Ave A Einstein, F-69626 Villeurbanne, France

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 226卷

关键词：

Gasoline particulate filter; Perovskite; Silver; Soot combustion; DIESEL SOOT COMBUSTION; EXPERIMENTAL MICROKINETIC APPROACH; YTTRIA-STABILIZED ZIRCONIA; CERIA/SOOT CONTACTS; OXIDE CATALYSTS; TOTAL OXIDATION; AG POWDER; SURFACE; MN; FE;

D O I：

10.1016/j.apcatb.2017.12.029

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silver modified manganite (LaSrAgMn) and ferrite (LaSrAgFe) perovskites were synthesized with different Ag loadings and tested for the soot oxidation reaction at low oxygen concentrations (i.e. 1 vol%), as encountered in gasoline direct injection (GDI) engines application. The state and location of Ag determine the catalytic performances of perovskites. On ferrites, Ag is either partially incorporated on the structure or present on the surface as large agglomerates. Lattice Ag+ cations are not catalytically active. Furthermore, large surface Ag particles partially cover surface oxygen vacancies and block their ability to adsorb oxygen. On the other hand, small clusters of Ag and AgO as well as a surface Ag1.8Mn8O16 additional hollandite-type phase are stabilized on manganites surface, improving the reducibility and acting as active sites for soot oxidation.

引用

页码：202 / 212

页数：11

共 56 条

[41] REVISED EFFECTIVE IONIC-RADII AND SYSTEMATIC STUDIES OF INTERATOMIC DISTANCES IN HALIDES AND CHALCOGENIDES
SHANNON, RD
[J]. ACTA CRYSTALLOGRAPHICA SECTION A, 1976, 32 (SEP1): : 751 - 767
[42] Carbon oxidation with Ag/ceria prepared by self-dispersion of Ag powder into nano-particles
Shimizu, Ken-ichi
Kawachi, Hiroshi
Komai, Shin-ichi
Yoshida, Kaname
Sasaki, Yukichi
Satsuma, Atsushi
[J]. CATALYSIS TODAY, 2011, 175 (01) : 93 - 99
[43] Study of active sites and mechanism for soot oxidation by silver-loaded ceria catalyst
Shimizu, Ken-ichi
Kawachi, Hiroshi
Satsuma, Atsushi
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2010, 96 (1-2) : 169 - 175
[44] Comparison of catalytic performance of Ag- and K-based catalysts for diesel soot combustion
Shimokawa, Hironobu
Kurihara, Yasuyuki
Kusaba, Hajime
Einaga, Hisahiro
Teraoka, Yasutake
[J]. CATALYSIS TODAY, 2012, 185 (01) : 99 - 103
[45] Ceria-catalyzed soot oxidation studied by environmental transmission electron microscopy
Simonsen, S. B.
Dahl, S.
Johnson, E.
Helveg, S.
[J]. JOURNAL OF CATALYSIS, 2008, 255 (01) : 1 - 5
[46] Perovskite-like catalysts LaBO3 (B = Cu, Fe, Mn, Co, Ni) for wet peroxide oxidation of phenol
Taran, Oxana P.
Ayusheev, Artemiy B.
Ogorodnikova, Olga L.
Prosvirin, Igor P.
Isupova, Lyubov A.
Parmon, Valentin N.
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2016, 180 : 86 - 93
[47] Effect of potassium addition on catalytic activity of SrTiO3 catalyst for diesel soot combustion
Ura, B.
Trawczynski, J.
Kotarba, A.
Bieniasz, W.
Illan-Gomez, M. J.
Bueno-Lopez, A.
Lopez-Suarez, F. E.
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 101 (3-4) : 169 - 175
[48] Systematic x-ray photoelectron spectroscopic study of La1-xSrx-based perovskite-type oxides
van der Heide, PAW
[J]. SURFACE AND INTERFACE ANALYSIS, 2002, 33 (05) : 414 - 425
[49] Comparative study of nanometric Co-, Mn- and Fe-based perovskite-type complex oxide catalysts for the simultaneous elimination of soot and NOx from diesel engine exhaust
Wang, Hong
Liu, Jian
Zhao, Zhen
Wei, Yuechang
Xu, Chunming
[J]. CATALYSIS TODAY, 2012, 184 (01) : 288 - 300
[50] Simultaneous removal of NOx and soot particulates over La0.7Ag0.3MnO3 perovskite oxide catalysts
Wang, Ke
Qian, Ling
Zhang, Lei
Liu, Huanrong
Yan, Zifeng
[J]. CATALYSIS TODAY, 2010, 158 (3-4) : 423 - 426

← 1 2 3 4 5 6 →