Nanostructured PtZn intermetallic compound: Controlled formation from PtZn(CH3COO)4 molecular precursor and tests of catalytic properties

Nanostructured PtZn intermetallic compound: Controlled formation from PtZn(CH3COO)4 molecular precursor and tests of catalytic properties Full article

Journal

Intermetallics
ISSN: 0966-9795 , E-ISSN: 1879-0216

Output data

Year: 2021, Volume: 132, Article number : 107160, Pages count : DOI: 10.1016/j.intermet.2021.107160

Authors

Smirnova Nadezhda S. ¹ , Khramov Evgeny V. ² , Stolarov Igor P. ¹ , Yakushev Ilya A. ¹ , Baeva Galina N. ³ , Bragina Galina O. ³ , Belova Ekaterina V. ⁴ , Ishchenko Arcady V. ⁵ , Popova Anna S. ⁶ , Zubavichus Yan V. ⁵ , Vargaftik Michael N. ¹ , Stakheev Aleksander Y. ³

Affiliations

1	Kurnakov Institute of General and Inorganic Chemistry RAS, 119991, Leninsky prospect, 31, Moscow, Russian Federation
2	National Research Center «Kurchatov Institute», 123182, Akademika Kurchatova pl., 1, Moscow, Russian Federation
3	Zelinsky Institute of Organic Chemistry RAS, 119991, Leninsky prospect, 47, Moscow, Russian Federation
4	Lomonosov Moscow State University, 119991, Leninskie Gory, 1, Moscow, Russian Federation
5	Boreskov Institute of Catalysis SB RAS, 630090, Novosibirsk, Lavrentiev Ave., 5, Russian Federation
6	Peoples' Friendship University of Russia, 117198, Miklukho-Maklaya str.6, Moscow, Russian Federation

Phase transformations of a newly synthesized heterobimetallic ZnPt(OOCMe)4(H2O)(MeCOOH)2 acetate in a chemically reductive atmosphere at mildly elevated temperatures are thoroughly studied in order to optimize conditions for the formation of nanostructured PtZn intermetallic compound. According to XAFS and XRD data, the first stage of reductive thermolysis is the reduction of the noble metal, while zinc remains in an oxygen environment. At the second stage the reduction of Zn and the formation of the bimetallic solid solution with the fcc lattice occur. It is shown that recrystallization of solid solution to ordered PtZn intermetallic compound with the tetragonal structure occurs in a narrow temperature range of 250–275 °C. Based on these results, the optimum reduction temperature for the preparation of supported bimetallic Pt–Zn/Al2O3 catalyst was determined to be 300 °C. Results of catalytic tests of the supported material are reported.

Smirnova N.S. , Khramov E.V. , Stolarov I.P. , Yakushev I.A. , Baeva G.N. , Bragina G.O. , Belova E.V. , Ishchenko A.V. , Popova A.S. , Zubavichus Y.V. , Vargaftik M.N. , Stakheev A.Y.
Nanostructured PtZn intermetallic compound: Controlled formation from PtZn(CH3COO)4 molecular precursor and tests of catalytic properties
Intermetallics. 2021. V.132. 107160 . DOI: 10.1016/j.intermet.2021.107160 WOS Scopus OpenAlex

≡ Web of science:	WOS:000634631600003
≡ Scopus:	2-s2.0-85101993661
≡ OpenAlex:	W3134800229