Research output: Contribution to journal › Article › peer-review
Influence of Preparation Method of Ag–CeO2 Catalysts on Their Structure and Activity in Soot Combustion. / Sadlivskaya, M. V.; Mikheeva, N. N.; Zaikovskii, V. I. et al.
In: Kinetics and Catalysis, Vol. 60, No. 4, 01.07.2019, p. 432-438.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Influence of Preparation Method of Ag–CeO2 Catalysts on Their Structure and Activity in Soot Combustion
AU - Sadlivskaya, M. V.
AU - Mikheeva, N. N.
AU - Zaikovskii, V. I.
AU - Mamontov, G. V.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - The exhaust gases from motor vehicles contain unburned soot particles that pollute the environment and have a detrimental effect on the human health. The solution to this problem requires the development of new highly efficient Pt- and Pd-less catalysts for the oxidation of soot in exhaust gases. In the present work, the catalysts based on the Ag–CeO2 composition were synthesized by two techniques (co-precipitation and incipient wetness impregnation) and characterized by a complex of physicochemical methods (low-temperature nitrogen adsorption, powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (TEM HR) and temperature-programmed oxidation (TPO)). The catalytic properties of the catalysts were studied in the reaction of soot oxidation. It was shown that the Ag–CeO2 catalyst prepared by the coprecipitation method was the most active in soot oxidation. The increased activity of the catalyst was associated with the formation of a complex structure, representing an agglomerate of strongly interacting silver and ceria particles, which significant affect the low-temperature activation of oxygen on the catalyst surface as shown by the TPO method.
AB - The exhaust gases from motor vehicles contain unburned soot particles that pollute the environment and have a detrimental effect on the human health. The solution to this problem requires the development of new highly efficient Pt- and Pd-less catalysts for the oxidation of soot in exhaust gases. In the present work, the catalysts based on the Ag–CeO2 composition were synthesized by two techniques (co-precipitation and incipient wetness impregnation) and characterized by a complex of physicochemical methods (low-temperature nitrogen adsorption, powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (TEM HR) and temperature-programmed oxidation (TPO)). The catalytic properties of the catalysts were studied in the reaction of soot oxidation. It was shown that the Ag–CeO2 catalyst prepared by the coprecipitation method was the most active in soot oxidation. The increased activity of the catalyst was associated with the formation of a complex structure, representing an agglomerate of strongly interacting silver and ceria particles, which significant affect the low-temperature activation of oxygen on the catalyst surface as shown by the TPO method.
KW - Ag–CeO catalysts
KW - oxygen activation
KW - soot oxidation
KW - NANOPARTICLES
KW - AG/CEO2 CATALYSTS
KW - INTERFACE
KW - PERFORMANCE
KW - CERIA CATALYSTS
KW - CEO2
KW - CO OXIDATION
KW - Ag-CeO2 catalysts
KW - AG/SIO2 CATALYSTS
UR - http://www.scopus.com/inward/record.url?scp=85071476535&partnerID=8YFLogxK
U2 - 10.1134/S0023158419040141
DO - 10.1134/S0023158419040141
M3 - Article
AN - SCOPUS:85071476535
VL - 60
SP - 432
EP - 438
JO - Kinetics and Catalysis
JF - Kinetics and Catalysis
SN - 0023-1584
IS - 4
ER -
ID: 21466960