TY - JOUR

T1 - Synthesis and Study of Bimetallic Pd-Rh System Supported on Zirconia-Doped Alumina as a Component of Three-way Catalysts

AU - Vedyagin, Aleksey A.

AU - Kenzhin, Roman M.

AU - Tashlanov, Mikhail Yu

AU - Stoyanovskii, Vladimir O.

AU - Plyusnin, Pavel E.

AU - Shubin, Yury V.

AU - Mishakov, Ilya V.

AU - Kalinkin, Alexander V.

AU - Smirnov, Mikhail Yu

AU - Bukhtiyarov, Valerii I.

N1 - The study was financially supported by the Ministry of Education and Science of the Russian Federation within the framework of subsidizing agreement of October 23, 2017 (No. 14.581.21.0028, unique agreement identifier RFMEFI58117X0028) of the Federal Target Program "Research and development in priority directions of the progress of the scientific and technological complex of Russia for the years 2014-2020."

PY - 2019/12/15

Y1 - 2019/12/15

N2 - The present work is aimed at preparation and detailed characterization of the Pd-Rh/γ-Al2O3-ZrO2 composition used as a component of three-way catalysts. Physicochemical properties, such as specific surface area, morphology, secondary structure, dispersity and chemical state of active components, and thermal stability along with catalytic activity were studied within this research. Textural parameters of the samples were examined using low-temperature nitrogen adsorption. Analysis of the morphology and secondary structure was performed by means of electron microscopy. Concentration of metals located on the surface and accessible for the reagents was estimated using test reaction of ethane hydrogenolysis. Method of X-ray photoelectron spectroscopy was applied to investigate the chemical state of active components. Catalytic performance and thermal stability of the samples were tested in a prompt thermal aging regime using CO oxidation reaction as a criterion for in situ characterization of the catalyst state. It was found that both these characteristics strongly depend on the nature and composition of the precursors used.

AB - The present work is aimed at preparation and detailed characterization of the Pd-Rh/γ-Al2O3-ZrO2 composition used as a component of three-way catalysts. Physicochemical properties, such as specific surface area, morphology, secondary structure, dispersity and chemical state of active components, and thermal stability along with catalytic activity were studied within this research. Textural parameters of the samples were examined using low-temperature nitrogen adsorption. Analysis of the morphology and secondary structure was performed by means of electron microscopy. Concentration of metals located on the surface and accessible for the reagents was estimated using test reaction of ethane hydrogenolysis. Method of X-ray photoelectron spectroscopy was applied to investigate the chemical state of active components. Catalytic performance and thermal stability of the samples were tested in a prompt thermal aging regime using CO oxidation reaction as a criterion for in situ characterization of the catalyst state. It was found that both these characteristics strongly depend on the nature and composition of the precursors used.

KW - Pd-Rh nanoalloys

KW - Thermal stability

KW - Three-way catalysts

KW - XPS

KW - Zr-doped alumina

UR - http://www.scopus.com/inward/record.url?scp=85070597927&partnerID=8YFLogxK

U2 - 10.1007/s40825-019-00133-2

DO - 10.1007/s40825-019-00133-2

M3 - Article

AN - SCOPUS:85070597927

VL - 5

SP - 363

EP - 377

JO - Emission Control Science and Technology

JF - Emission Control Science and Technology

SN - 2199-3629

IS - 4

ER -