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Synthesis and Study of Pd-Rh Alloy Nanoparticles and Alumina-Supported Low-Content Pd-Rh Catalysts for CO Oxidation Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Materials Research Bulletin
ISSN: 0025-5408
Output data Year: 2018, Volume: 102, Pages: 196-202 Pages count : 7 DOI: 10.1016/j.materresbull.2018.02.038
Tags Partly miscible metals; Palladium-rhodium alloy; CO oxidation; Catalyst preparation conditions; Double complex salts
Authors Vedyagin A.A. 1,2 , Plyusnin P.E. 3,4 , Rybinskaya A.A. 4 , Shubin Y.V. 3,4 , Mishakov I.V. 1,2 , Korenev S.V. 3,4
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Novosibirsk, 630090, Russian Federation
2 National Research Tomsk Polytechnic University, Tomsk, 634050, Russian Federation
3 Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk, 630090, Russian Federation
4 Novosibirsk State University, Novosibirsk, 630090, Russian Federation

Funding (1)

1 Russian Science Foundation 16-13-10192

Abstract: Palladium and rhodium are known to be partly miscible metals. In present work, the peculiarities of coordination compound [Pd(NH3)4]3[Rh(NO2)6]2 decomposition with formation of nanosized solid solutions under different atmospheres were studied by means of thermal gravimetry. Formation of alloy nanoparticles were confirmed by powder X-ray diffraction analysis, scanning and transmission electron microscopies. A bimetallic Pd-Rh/alumina catalyst was prepared by incipient wetness impregnation using coordination compound [Pd(NH3)4]3[Rh(NO2)6]2 as a precursor. Monometallic reference samples were obtained using [Pd(NH3)4](NO3)2 and Na3[Rh(NO2)6], correspondingly. Catalytic performance and stability of the catalysts were examined in a model reaction of CO oxidation in a prompt thermal aging regime. The environment of precursor decomposition was shown to affect noticeably both the initial activity and stability of the samples in the studied reaction. Reductive atmosphere in comparison with inert and oxidative ones facilitates the formation of the smallest active component species, which demonstrate highest initial activity but worst stability.
Cite: Vedyagin A.A. , Plyusnin P.E. , Rybinskaya A.A. , Shubin Y.V. , Mishakov I.V. , Korenev S.V.
Synthesis and Study of Pd-Rh Alloy Nanoparticles and Alumina-Supported Low-Content Pd-Rh Catalysts for CO Oxidation
Materials Research Bulletin. 2018. V.102. P.196-202. DOI: 10.1016/j.materresbull.2018.02.038 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Aug 20, 2017
Accepted: Feb 20, 2018
Published online: Mar 21, 2018
Published print: Jun 1, 2018
Identifiers:
publication_identifier.wos_identifier_type WOS:000430762200026
publication_identifier.scopus_identifier_type 2-s2.0-85042481557
publication_identifier.rinz_identifier_type 35501859
publication_identifier.accession_number_identifier_type 2018:361743
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