Tetraalkylammonium Salts of Platinum Nitrato Complexes: Isolation, Structure, and Relevance to the Preparation of PtOx/CeO2 Catalysts for Low-Temperature CO Oxidation | Sciact - CRIS-system of Boreskov Institute of Catalysis

Tetraalkylammonium Salts of Platinum Nitrato Complexes: Isolation, Structure, and Relevance to the Preparation of PtOx/CeO2 Catalysts for Low-Temperature CO Oxidation Full article

Journal

Inorganic Chemistry
ISSN: 0020-1669 , E-ISSN: 1520-510X

Output data

Year: 2019, Volume: 58, Pages: 6075-6087 Pages count : 13 DOI: 10.1021/acs.inorgchem.9b00370

Tags

X-ray photoelectron-spectroscopy; metal-support interaction; molecular-orbital methods; carbon-monoxide; Pt/CeO2 catalysts; nanoparticles; implementation; potentials; absorption; morphology

Authors

Vasilchenko Danila ^1,2 , Topchiyan Polina ^1,2 , Berdyugin Semen ¹ , Filatov Evgeny ^1,3 , Tkachev Sergey ¹ , Baidina Iraida ¹ , Komarov Vladislav ^1,3 , Slavinskaya Elena ² , Stadnichenko Andrey ^2,3 , Gerasimov Evgeny ^2,3

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russian Federation
2	Novosibirsk State University, 630090 Novosibirsk, Russian Federation
3	Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation

Funding (1)

Russian Science Foundation

18-73-00054

A series of tetraalkylammonium salts with anionic platinum nitrato complexes (Me4N)2[Pt2(μ-OH)2(NO3)8] (1), (Et4N)2[Pt2(μ-OH)2(NO3)8] (2), (n-Pr4N)2[Pt2(μ-OH)2(NO3)8] (3b), (n-Pr4N)2[Pt(NO3)6] (3a), and (n-Bu4N)2[Pt(NO3)6] (4) were isolated from nitric acid solutions of [Pt(H2O)2(OH)4] in high yield. The structures of salts 2, 3a, 3b, and 4, prepared for the first time, were characterized by X-ray diffraction. The sorption of [Pt(NO3)6]2– and [Pt2(μ-OH)2(NO3)8]2– complexes onto the ceria surface from acetone solutions of salts 4 and 1 was examined. The dimeric anion was shown to quickly and irreversibly chemisorb onto the CeO2 carrier, selectively transforming into Pt(II) centers after thermal treatment, becoming active in the low-temperature CO oxidation reaction (T50% = 110 °C at a space velocity of 240 000 h–1). By contrast, the homoleptic complex [Pt(NO3)6]2– did not interact with the ceria, which may be attributed to the substitutional inertness of the [Pt(NO3)6]2– anion. We believe that the strategy based on the sorption of polynuclear platinum nitrato complexes is an effective route to prepare ionic platinum species uniformly distributed on an oxide carrier for various catalytic applications.

Vasilchenko D. , Topchiyan P. , Berdyugin S. , Filatov E. , Tkachev S. , Baidina I. , Komarov V. , Slavinskaya E. , Stadnichenko A. , Gerasimov E.
Tetraalkylammonium Salts of Platinum Nitrato Complexes: Isolation, Structure, and Relevance to the Preparation of PtOx/CeO2 Catalysts for Low-Temperature CO Oxidation
Inorganic Chemistry. 2019. V.58. P.6075-6087. DOI: 10.1021/acs.inorgchem.9b00370 WOS Scopus РИНЦ AN PMID OpenAlex

Submitted:	Feb 8, 2019
Published online:	Apr 5, 2019
Published print:	May 6, 2019

Web of science:	WOS:000467351100079
Scopus:	2-s2.0-85064355406
Elibrary:	38746726
Chemical Abstracts:	2019:666523
PMID:	30951300
OpenAlex:	W2931489268

DB	Citing
Scopus	38
Web of science	35
Elibrary	38
OpenAlex	35