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 |
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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 | ||||||||
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Abstract:
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.
Cite:
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
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
Dates:
Submitted: | May 25, 2014 |
Published print: | Aug 17, 2014 |
Accepted: | Sep 24, 2014 |
Published online: | Sep 24, 2014 |
Identifiers:
Web of science | WOS:000344378900028 |
Scopus | 2-s2.0-84922811025 |
Elibrary | 24032671 |
Chemical Abstracts | 2014:1817578 |
Chemical Abstracts (print) | 162:559856 |
OpenAlex | W1538237534 |