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Alcoxotechnology for obtaining heat-resistant materials based on rhenium and ruthenium

https://doi.org/10.32362/2410-6593-2020-15-6-67-76

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Abstract

Objectives. To develop physical and chemical bases and methods to obtain rhenium–ruthenium isoproxide Re4-yRuyO6(OPri)10 —a precursor for obtaining a high-temperature alloy—from ruthenium acetylacetonate and rhenium isoproxide acquired by electrochemical methods.

Methods. IR spectroscopy (EQUINOX 55 Bruker, Germany), X-ray phase and elemental analyses, energy-dispersive microanalysis (EDMA, SEM JSM5910-LV, analytical system AZTEC), powder X-ray diffraction (diffractometer D8 Advance Bruker, Germany), experimental station XSA beamline at the Kurchatov Synchrotron Radiation Source.

Results. The isoproxide complex of rhenium–ruthenium Re4-yRuyO6(OPri)10 was obtained, and its composition and structure were established. Previously conducted quantum chemical calculations on the possibility of replacing rhenium atoms with ruthenium atoms in the isopropylate complex were experimentally proven, and the influence of the electroconductive additive on the composition of the obtained alloy was revealed.

Conclusions. Physical and chemical bases and methods for obtaining rhenium–ruthenium isoproxide Re4-yRuyO6(OPri)10 were developed. The possibility of using rhenium–ruthenium Re4-yRuyO6(OPri)10 as a precursor in the production of ultra- and nanodisperse rhenium–ruthenium alloy powders at a record low temperature of 650°C were shown.

About the Authors

E. S. Kulikova
MIREA – Russian Technological University
Russian Federation

Elizaveta S. Kulikova, Cand. of Sci. (Chemistry), Head of the Laboratory, K.A. Bolshakov Department of Chemistry and Technology of Rare Elements, M.V. Lomonosov Institute of Fine Chemical Technologies. Scopus Author ID 57195299209, Researcher ID O-8759-2017

86, Vernadskogo pr., Moscow, 119571



O. V. Chernyshova
MIREA – Russian Technological University
Russian Federation

Oxana V. Chernyshova, Cand. of Sci. (Engineering), Docent, K.A. Bolshakov Department of Chemistry and Technology of Rare Elements, M.V. Lomonosov Institute of Fine Chemical Technologies. Scopus Author ID 8961258100

86, Vernadskogo pr., Moscow, 119571



L. A. Nosikova
MIREA – Russian Technological University
Russian Federation

Lubov A. Nosikova, Cand. of Sci. (Chemistry), Associate Professor, K.A. Bolshakov Department of Chemistry and Technology of Rare Elements, M.V. Lomonosov Institute of Fine Chemical Technologies. Scopus Author ID 18434729100, Researcher ID O-2596-2017

86, Vernadskogo pr., Moscow, 119571



R. D. Svetogorov
National Research Center Kurchatov Institute
Russian Federation

Roman D. Svetogorov, Research Engineer, National Research Center Kurchatov Institute. Scopus Author ID 55920161900, Researcher ID A-7091-2015

1, pl. Akademika Kurchatova, Moscow, 123182



D. V. Drobot
MIREA – Russian Technological University
Russian Federation

Dmitry V. Drobot, Dr. of Sci. (Chemistry), Professor, K.A. Bolshakov Department of Chemistry and Technology of Rare Elements, M.V. Lomonosov Institute of Fine Chemical Technologies. Scopus Author ID 35580931100, ResearcherID AAR-3711-2019

86, Vernadskogo pr., Moscow, 119571



I. A. Mikheev
MIREA – Russian Technological University
Russian Federation

Ilya A. Mikheev, Engineer, Mobile Solutions Engineering Center

86, Vernadskogo pr., Moscow, 119571



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Supplementary files

1. Electron microscopy of rhenium isoproxide
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2. This is to certify that the paper titled Alcoxotechnology for obtaining heat-resistant materials based on rhenium and ruthenium commissioned to us by Elizaveta S. Kulikova, Oxana V. Chernyshova, Lubov A. Nosikova, Roman D. Svetogorov, Dmitry V. Drobot, Ilya A. Mikheev has been edited for English language and spelling by Enago, an editing brand of Crimson Interactive Inc.
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  • Rhenium–ruthenium alloys were obtained at the record low temperature of 650°C and a pressure of 5 atm.
  • The advantage of using tetrabutylammonium bromide as an electrically conductive supplement in comparison with the widely used lithium chloride was demonstrated.
  • The resulting bimetallic rhenium–ruthenium isopropylate complex was characterized by a set of analysis methods (IR, X-ray phase, and elemental analyses). The presence of rhenium–ruthenium bonds was shown, confirming the quantum chemical calculations previously performed in the Priroda 06 program about the possibility of bimetallic alkoxocomplex formation.

For citation:


Kulikova E.S., Chernyshova O.V., Nosikova L.A., Svetogorov R.D., Drobot D.V., Mikheev I.A. Alcoxotechnology for obtaining heat-resistant materials based on rhenium and ruthenium. Fine Chemical Technologies. 2020;15(6):67-76. https://doi.org/10.32362/2410-6593-2020-15-6-67-76

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