Solid-state thermal transformations in mixtures of platinum(II) tetraammine with ammonium chromate and ammonium dichromate
| Autor: | L. S. Tarasova, E. V. Fesik, T. I. Mel’nikova, T. M. Buslaeva |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
General Chemical Engineering
Inorganic chemistry Thermal decomposition Metals and Alloys chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Ammonium dichromate 0104 chemical sciences Catalysis Inorganic Chemistry chemistry.chemical_compound Chromium chemistry Materials Chemistry 0210 nano-technology Ammonium chromate Platinum Thermal analysis Solid solution |
| Zdroj: | Inorganic Materials. 53:1033-1038 |
| ISSN: | 1608-3172 0020-1685 |
| DOI: | 10.1134/s0020168517100065 |
| Popis: | Thermal transformations of 3[Pt(NH3)4]Cl2–(NH4)2CrO4 (I) and 3[Pt(NH3)4]Cl2–2(NH4)2Cr2O7 (II) mixtures in a solid state have been studied by thermal analysis and mass spectrometry in an inert (Ar) atmosphere and air at temperatures from 40 to 550°C. The chemical and phase compositions of the thermolysis products obtained in argon have been determined: Pt and Cr2O3 in mixture I and Pt, a platinum-based Pt1 – y Cr y solid solution, and Cr2O3 in mixture II. The thermal transformation products of mixtures I and II in air consist of two phases: Pt and Cr2O3. It has been shown that interactions in the mixtures proceed through the formation of a metallic chromium phase. The materials obtained in this study can find application as catalysts for low-temperature fuel cells, as well as for organic synthesis processes. |
| Databáze: | OpenAIRE |
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