TY - JOUR

T1 - New Complex Salts as Precursors of Porous Pd–Ir–Rh Nanoalloys

AU - Gladysheva, M. V.

AU - Plyusnin, P. E.

AU - Shubin, Yu V.

AU - Vedyagin, A. A.

AU - Korenev, S. V.

N1 - Funding Information: This work was supported by the Russian Science Foundation (project no. 21-13-00414). Funding Information: The X-ray powder diffraction analysis and IR spectroscopy studies of the samples of the DCS solid solutions were supported by the Ministry of Science and Higher Education of the Russian Federation under a State assignment for the Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia (project no. 21031700315-2). Publisher Copyright: © 2022, Pleiades Publishing, Ltd.

PY - 2022/8

Y1 - 2022/8

N2 - New complex salts [Pd(NH3)4]3[Ir(NO2)6]2x[Rh(NO2)6]2 – 2x (II–VI) were prepared, which are solid solutions based on double complex salts [Pd(NH3)4]3[Ir(NO2)6]2 (I) and [Pd(NH3)4]3[Ir(NO2)6]2. The obtained compounds were characterized by X-ray powder diffraction analysis, IR spectroscopy, and elemental analysis. The compounds crystallize in the cubic system (space group (Formula Presented.)). The thermal behavior of compounds I–VI in various gas atmospheres was investigated. The final products of thermolysis of [Pd(NH3)4]3[Ir(NO2)6]2x[Rh(NO2)6]2 – 2x in reducing (H2) and inert (He) atmospheres were trimetallic porous Pd–Ir–Rh nanoalloys. The final products of thermolysis in an oxidizing atmosphere were mixtures of metal oxide phases with an admixture of a metal phase. The structural and morphological properties of the formed nanoalloys were studied. The obtained solid solutions of double complex salts [Pd(NH3)4]3[Ir(NO2)6]2x[Rh(NO2)6]2 – 2x were used to synthesize alloy nanoparticles on the surface of a γ-Al2O3 oxide support. The catalytic activity and stability of the produced catalyst samples were tested in a model reaction of CO oxidation under forced thermal aging conditions.

AB - New complex salts [Pd(NH3)4]3[Ir(NO2)6]2x[Rh(NO2)6]2 – 2x (II–VI) were prepared, which are solid solutions based on double complex salts [Pd(NH3)4]3[Ir(NO2)6]2 (I) and [Pd(NH3)4]3[Ir(NO2)6]2. The obtained compounds were characterized by X-ray powder diffraction analysis, IR spectroscopy, and elemental analysis. The compounds crystallize in the cubic system (space group (Formula Presented.)). The thermal behavior of compounds I–VI in various gas atmospheres was investigated. The final products of thermolysis of [Pd(NH3)4]3[Ir(NO2)6]2x[Rh(NO2)6]2 – 2x in reducing (H2) and inert (He) atmospheres were trimetallic porous Pd–Ir–Rh nanoalloys. The final products of thermolysis in an oxidizing atmosphere were mixtures of metal oxide phases with an admixture of a metal phase. The structural and morphological properties of the formed nanoalloys were studied. The obtained solid solutions of double complex salts [Pd(NH3)4]3[Ir(NO2)6]2x[Rh(NO2)6]2 – 2x were used to synthesize alloy nanoparticles on the surface of a γ-Al2O3 oxide support. The catalytic activity and stability of the produced catalyst samples were tested in a model reaction of CO oxidation under forced thermal aging conditions.

KW - CO oxidation

KW - iridium

KW - palladium

KW - powder X-ray diffraction analysis

KW - rhodium

KW - thermal analysis

UR - http://www.scopus.com/inward/record.url?scp=85138739708&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/08a346eb-cf20-3956-9c03-4045c2a43ce2/

U2 - 10.1134/S0036023622080137

DO - 10.1134/S0036023622080137

M3 - Article

AN - SCOPUS:85138739708

VL - 67

SP - 1135

EP - 1143

JO - Russian Journal of Inorganic Chemistry

JF - Russian Journal of Inorganic Chemistry

SN - 0036-0236

IS - 8

ER -