Synthesis of Magnesium Carbonate via Carbonation under High Pressure in an Autoclave
| Autor: | Simon Etzold, Hermann Wotruba, Bernd Friedrich, Giuseppe Modolo, Dario Kremer, Philip Kegler, Diego Rosani, Rainer Telle, Pol Knops, Christian Dertmann, Srecko Stopic, Stefan Neumeier |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:TN1-997
Materials science synthesis CO2 utilization Carbonation 0211 other engineering and technologies Oxide chemistry.chemical_element 02 engineering and technology 010502 geochemistry & geophysics MgCO3-powder 01 natural sciences Autoclave chemistry.chemical_compound olivine carbonation ddc:530 General Materials Science thermal decomposition lcsh:Mining engineering. Metallurgy 0105 earth and related environmental sciences 021110 strategic defence & security studies CO2- absorption autoclave Magnesium Metals and Alloys Ascorbic acid Chemical engineering chemistry Carbon dioxide Carbonate Magnesite |
| Zdroj: | Metals, Vol 8, Iss 12, p 993 (2018) Metals Volume 8 Issue 12 BASE-Bielefeld Academic Search Engine Metals : open access journal 8(12), 993 (2018). doi:10.3390/met8120993 special issue: "Special Issue "Advances in Synthesis of Metallic, Oxidic and Composite Powders" / Guest Editor Dr. Srecko Stopic, IME Process Metallurgy and Metal Recycling Department, RWTH Aachen University, Germany; Prof. Dr. Bernd Friedrich, IME Process Metallurgy and Metal Recycling Department, RWTH Aachen University" Metals 8(12), 993-(2018). doi:10.3390/met8120993 |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met8120993 |
| Popis: | Magnesium carbonate powders are essential in the manufacture of basic refractories capable of withstanding extremely high temperatures and for special types of cement and powders used in the paper, rubber, and pharmaceutical industries. A novel synthesis route is based on CO2 absorption/sequestration by minerals. This combines the global challenge of climate change with materials development. Carbon dioxide has the fourth highest composition in earth&rsquo s atmosphere next to nitrogen, oxygen and argon and plays a big role in global warming due to the greenhouse effect. Because of the significant increase of CO2 emissions, mineral carbonation is a promising process in which carbon oxide reacts with materials with high metal oxide composition to form chemically stable and insoluble metal carbonate. The formed carbonate has long-term stability and does not influence the earth&rsquo s atmosphere. Therefore, it is a feasible and safe method to bind carbon dioxide in carbonate compounds such as magnesite. The subject of this work is the carbonation of an olivine (Mg2SiO4) and synthetic magnesia sample (> 97 wt% MgO) under high pressure and temperature in an autoclave. Early experiments have studied the influence of some additives such as sodium bicarbonate, oxalic acid and ascorbic acid, solid/liquid ratio, and particle size on the carbonation efficiency. The obtained results for carbonation of olivine have confirmed the formation of magnesium carbonate in the presence of additives and complete carbonation of the MgO sample in the absence of additives. |
| Databáze: | OpenAIRE |
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