Solid-State Thermal Transformations in a Mixture of Palladium Tetraammine Dichloride with Ammonium Chromate
| Autor: | T. I. Mel’nikova, T. M. Buslaeva, E. V. Fesik, L. S. Tarasova |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
General Chemical Engineering Thermal decomposition Inorganic chemistry Metals and Alloys chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Inorganic Chemistry Metal chemistry.chemical_compound Chromium chemistry visual_art Materials Chemistry visual_art.visual_art_medium Isostructural 0210 nano-technology Ammonium chromate Thermal analysis Solid solution Palladium |
| Zdroj: | Inorganic Materials. 54:1299-1307 |
| ISSN: | 1608-3172 0020-1685 |
| DOI: | 10.1134/s0020168518120038 |
| Popis: | Solid-state transformations of a 3[Pd(NH3)4]Cl2 + (NH4)2CrO4 mixture at temperatures from 40 to 550°C in various media have been studied by thermal analysis and mass spectrometry. The results demonstrate that the solid thermolysis product obtained in an argon atmosphere consists of a single phase: palladium-based Pd1 – xCrx solid solution isostructural with palladium and having a unit-cell parameter a = 3.897(2) A. Its formation proceeds through the formation of metallic Pd and Cr, as evidenced by the absence of chromium oxide phases in all of the solid intermediate thermolysis products. The solid thermolysis product obtained in air consists of the phases Pd and PdO. A model has been proposed for the transformations of the 3[Pd(NH3)4]Cl2 + (NH4)2CrO4 mixture through the formation of metallic palladium and chromium. |
| Databáze: | OpenAIRE |
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