{"title":"Thermodynamic Properties of RuTe2 Evaluated by EMF Measurements on a Solid State Electrochemical Cell","authors":"E. G. Osadchii, M. V. Voronin","doi":"10.1134/S0020168524701061","DOIUrl":null,"url":null,"abstract":"<p>The thermodynamic properties of RuTe<sub>2</sub> have been determined for the first time using electromotive force (emf) measurements in the Ag–Ru–Te system. The thermodynamic properties have been evaluated from the temperature dependence of the emf measured on an all-solid electrochemical cell with a common gas space, corresponding to the virtual chemical reaction 4Ag + RuTe<sub>2</sub> = 2Ag<sub>2</sub>Te + Ru. The measurements have been performed in the temperature range 747–884 K. As a result, the following standard thermodynamic properties of formation of RuTe<sub>2</sub> from its constituent elements at 298.15 K and 1 bar (10<sup>5</sup> Pa) are recommended: Δ<sub><i>f</i></sub><i>G</i>° = –126.9 kJ/mol, <i>S</i>° = 94.94 J/(mol K), and Δ<sub><i>f</i></sub><i>H</i>° = –136.6 kJ/mol. The thermodynamic properties of RuTe<sub>2</sub> are compared to literature data for compounds isostructural with it: ruthenium disulfide and ruthenium diselenide.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 7","pages":"832 - 837"},"PeriodicalIF":0.9000,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S0020168524701061","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The thermodynamic properties of RuTe2 have been determined for the first time using electromotive force (emf) measurements in the Ag–Ru–Te system. The thermodynamic properties have been evaluated from the temperature dependence of the emf measured on an all-solid electrochemical cell with a common gas space, corresponding to the virtual chemical reaction 4Ag + RuTe2 = 2Ag2Te + Ru. The measurements have been performed in the temperature range 747–884 K. As a result, the following standard thermodynamic properties of formation of RuTe2 from its constituent elements at 298.15 K and 1 bar (105 Pa) are recommended: ΔfG° = –126.9 kJ/mol, S° = 94.94 J/(mol K), and ΔfH° = –136.6 kJ/mol. The thermodynamic properties of RuTe2 are compared to literature data for compounds isostructural with it: ruthenium disulfide and ruthenium diselenide.
期刊介绍：
Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.
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