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Tetraalkylammonium Salts of Platinum Nitrato Complexes : Isolation, Structure, and Relevance to the Preparation of PtO x /CeO 2 Catalysts for Low-Temperature CO Oxidation. / Vasilchenko, Danila; Topchiyan, Polina; Berdyugin, Semen и др.
в: Inorganic Chemistry, Том 58, № 9, 06.05.2019, стр. 6075-6087.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Tetraalkylammonium Salts of Platinum Nitrato Complexes
T2 - Isolation, Structure, and Relevance to the Preparation of PtO x /CeO 2 Catalysts for Low-Temperature CO Oxidation
AU - Vasilchenko, Danila
AU - Topchiyan, Polina
AU - Berdyugin, Semen
AU - Filatov, Evgeny
AU - Tkachev, Sergey
AU - Baidina, Iraida
AU - Komarov, Vladislav
AU - Slavinskaya, Elena
AU - Stadnichenko, Andrey
AU - Gerasimov, Evgeny
N1 - Publisher Copyright: © 2019 American Chemical Society.
PY - 2019/5/6
Y1 - 2019/5/6
N2 - A series of tetraalkylammonium salts with anionic platinum nitrato complexes (Me 4 N) 2 [Pt 2 (μ-OH) 2 (NO 3 ) 8 ] (1), (Et 4 N) 2 [Pt 2 (μ-OH) 2 (NO 3 ) 8 ] (2), (n-Pr 4 N) 2 [Pt 2 (μ-OH) 2 (NO 3 ) 8 ] (3b), (n-Pr 4 N) 2 [Pt(NO 3 ) 6 ] (3a), and (n-Bu 4 N) 2 [Pt(NO 3 ) 6 ] (4) were isolated from nitric acid solutions of [Pt(H 2 O) 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(NO 3 ) 6 ] 2- and [Pt 2 (μ-OH) 2 (NO 3 ) 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 CeO 2 carrier, selectively transforming into Pt(II) centers after thermal treatment, becoming active in the low-temperature CO oxidation reaction (T 50% = 110 °C at a space velocity of 240 000 h -1 ). By contrast, the homoleptic complex [Pt(NO 3 ) 6 ] 2- did not interact with the ceria, which may be attributed to the substitutional inertness of the [Pt(NO 3 ) 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.
AB - A series of tetraalkylammonium salts with anionic platinum nitrato complexes (Me 4 N) 2 [Pt 2 (μ-OH) 2 (NO 3 ) 8 ] (1), (Et 4 N) 2 [Pt 2 (μ-OH) 2 (NO 3 ) 8 ] (2), (n-Pr 4 N) 2 [Pt 2 (μ-OH) 2 (NO 3 ) 8 ] (3b), (n-Pr 4 N) 2 [Pt(NO 3 ) 6 ] (3a), and (n-Bu 4 N) 2 [Pt(NO 3 ) 6 ] (4) were isolated from nitric acid solutions of [Pt(H 2 O) 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(NO 3 ) 6 ] 2- and [Pt 2 (μ-OH) 2 (NO 3 ) 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 CeO 2 carrier, selectively transforming into Pt(II) centers after thermal treatment, becoming active in the low-temperature CO oxidation reaction (T 50% = 110 °C at a space velocity of 240 000 h -1 ). By contrast, the homoleptic complex [Pt(NO 3 ) 6 ] 2- did not interact with the ceria, which may be attributed to the substitutional inertness of the [Pt(NO 3 ) 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.
KW - RAY PHOTOELECTRON-SPECTROSCOPY
KW - METAL-SUPPORT INTERACTION
KW - MOLECULAR-ORBITAL METHODS
KW - CARBON-MONOXIDE
KW - PT/CEO2 CATALYSTS
KW - NANOPARTICLES
KW - IMPLEMENTATION
KW - POTENTIALS
KW - ABSORPTION
KW - MORPHOLOGY
UR - http://www.scopus.com/inward/record.url?scp=85064355406&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/70023f9f-0eed-30a2-8aeb-c323f946a81d/
U2 - 10.1021/acs.inorgchem.9b00370
DO - 10.1021/acs.inorgchem.9b00370
M3 - Article
C2 - 30951300
AN - SCOPUS:85064355406
VL - 58
SP - 6075
EP - 6087
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 9
ER -
ID: 19488413