Phase transitions of some sulfur-containing ammonium salts
| Autor: | Darya A. Kosova, A. L. Emelina, M. A. Bykov |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Ammonium bisulfate
Phase transition Ammonium sulfate Hydrogen Inorganic chemistry chemistry.chemical_element Condensed Matter Physics Sulfur containing chemistry.chemical_compound Differential scanning calorimetry chemistry Ammonium Physical and Theoretical Chemistry Instrumentation Ammonium sulfamate |
| Zdroj: | Thermochimica Acta. 595:61-66 |
| ISSN: | 0040-6031 |
| DOI: | 10.1016/j.tca.2014.08.035 |
| Popis: | For the first time high-temperature polymorphic transition of ammonium sulfate (NH4)2SO4 (Tpt ∼ 370 °C) was experimentally recorded and characterized by differential scanning calorimetry. Phase transitions parameters of (NH4)2SO4, of ammonium bisulfate NH4HSO4, of triammonium hydrogen disulfate (NH4)3H(SO4)2 and of ammonium sulfamate NH4SO3NH2 were clarified. Method of determining the phase transitions parameters for thermally unstable substances, in particular for the triammonium hydrogen disulfate (NH4)3H(SO4)2, was developed and tested with the help of differential scanning calorimetry. |
| Databáze: | OpenAIRE |
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