The impact of reagents concentration on the efficiency of obtaining high-purity magnesium hydroxide
| Autor: | Zbigniew Wzorek, Andrzej Jarosiński, Piotr Radomski, Anna Nowak |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Magnesium General Chemical Engineering Industrial chemistry chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences inorganic flame retardants Chemistry chemistry Chemical engineering Reagent precipitation method 0210 nano-technology QD1-999 Biotechnology magnesium hydroxide |
| Zdroj: | Polish Journal of Chemical Technology, Vol 22, Iss 2, Pp 73-77 (2020) |
| ISSN: | 1899-4741 |
| Popis: | The work presents the impact of reagents concentration and the drying process on the efficiency of obtaining magnesium hydroxide and its specific surface area. Magnesium sulphate(VI) within the concentration range of 0.7–2.0 mol/dm3 was used in the research as magnesium feedstock and sodium hydroxide was used as a precipitating agent within the same concentration range. The process of obtaining magnesium hydroxide was carried out with a 25% excess of the precipitating agent in relation to the reaction stoichiometry. The obtained suspension was separated by way of multi-stage sedimentation with the use of acetone and freezing samples. Depending on the concentration of reagents the efficiency of obtaining magnesium hydroxide fell within the range of 88–99%, whereas the specific surface area – within 115–609 m2/g, while the high purity of samples above 99% of magnesium hydroxide was maintained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|