Investigation into the Palladium-Europium Acetate Reductive Decomposition with Synchrotron Radiation-Based X-ray Diffraction and X-ray Absorption Spectroscopy | Sciact - CRIS-system of Boreskov Institute of Catalysis

Investigation into the Palladium-Europium Acetate Reductive Decomposition with Synchrotron Radiation-Based X-ray Diffraction and X-ray Absorption Spectroscopy Full article

Journal

Zeitschrift fur Anorganische und Allgemeine Chemie
ISSN: 0044-2313 , E-ISSN: 1521-3749

Output data

Year: 2014, Volume: 640, Number: 12-13, Pages: 2577-2582 Pages count : 6 DOI: 10.1002/zaac.201400258

Tags

Heterometallic complexes; Palladium; Nanoparticles; X-ray diffraction; EXAFS spectroscopy

Authors

Khramov Evgeny ¹ , Belyakova Olga ² , Murzin Vadim ^1,3 , Veligzhanin Alexey ¹ , Chernyshov Alfred ¹ , Vargaftik Mikhail ⁴ , Kozitsyna Natalya ⁴ , Zubavichus Yan ^1,2

Affiliations

1	Kurchatov Centre of Converging of Nano-, Bio-, Information and Cognitive Sciences and Technologies, National Research Center “Kurchatov Institute”, Kurchatov Square, 1, 123098 Moscow, Russian Federation
2	Laboratory for Polymer Structure Research A.N.Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Vavilova St. 28, 119991, GSP-1, Moscow, V-334, Russian Federation
3	Group for Structural Investigations, A.V. Topchiev Institute of Petrochemical Synthesis of the Russian Academy of Sciences, Leninskiy Avenue, 29, 119991, Moscow, Russian Federation
4	Laboratory of Metal Complex Catalysis, Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy Avenue 31, 119991, Moscow, Russian Federation

The reductive decomposition of the complex Pd2Eu2(μ,η2‐OOCMe)2(μ‐OOCMe)8(H2O)2·(HOOCMe)2 upon heating from room temperature to 500 °C in a hydrogen atmosphere was investigated by in situ synchrotron radiation‐based X‐ray absorption fine structure spectroscopy (XAFS) including observations of X‐ray near‐edge structure (XANES) and extended absorption fine structure (EXAFS) at Pd K‐ and Eu L3‐edges and synchrotron X‐ray diffraction (XRD). The Pd‐Eu2O3 nanocomposite was found to be the final thermolysis product. The decomposition proceeds via series of intermediate crystalline phases, including europium(II) and (III) anhydrous acetates and EuO(CH3COO) oxidoacetate. Surprisingly, the major fraction of europium occurs in the reduced form Eu2+ within a limited temperature range of 200–300 °C. Presumably, the reversible Eu3+↔Eu2+ redox‐process is associated with the stability of nanocrystalline palladium hydride, which acts as a stronger reducing agent as compared to molecular hydrogen.

Khramov E. , Belyakova O. , Murzin V. , Veligzhanin A. , Chernyshov A. , Vargaftik M. , Kozitsyna N. , Zubavichus Y.
Investigation into the Palladium-Europium Acetate Reductive Decomposition with Synchrotron Radiation-Based X-ray Diffraction and X-ray Absorption Spectroscopy
Zeitschrift fur Anorganische und Allgemeine Chemie. 2014. V.640. N12-13. P.2577-2582. DOI: 10.1002/zaac.201400258 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	May 25, 2014
Published print:	Aug 17, 2014
Accepted:	Sep 24, 2014
Published online:	Sep 24, 2014

Web of science:	WOS:000344378900028
Scopus:	2-s2.0-84922811025
Elibrary:	24032671
Chemical Abstracts:	2014:1817578
Chemical Abstracts (print):	162:559856
OpenAlex:	W1538237534

DB	Citing
Scopus	3
Web of science	3
OpenAlex	3