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The effects of modifiers and process conditions on synthesis of magnesium oxide by the carbonatization method and properties of the product are studied. Magnesium carbonate obtained from magnesium hydroxide and carbon dioxide was subjected to thermal decomposition at 800 C. The reaction of precipitation was performed checking the influence of temperature, rate and mode of reagents introduction, type and concentration of the modifier. The modifiers were the non-ionic compounds from the group of poly(ethylene glycols). The magnesium oxides produced were characterised by determination of their dispersivemorphological properties, wettability profiles, specific surface area, total volume and mean size of pores. The products were also subjected to identification by the X-ray diffraction method and TG/DTA analysis. The results revealed a significant impact of the concentration and type of modifiers on the physicochemical properties of MgO samples obtained and permitted selection of the best products for particular applications.
Rocznik
Tom
Strony
79--90
Opis fizyczny
Bibliogr. 14 poz.
Twórcy
autor
autor
autor
autor
- Poznan University of Technology, Institute of Chemical Technology and Engineering, M. Skłodowskiej -Curie 2, PL-60965 Poznan, Poland, teofil.jesionowski@put.poznan.pl
Bibliografia
- 1. BANDI W.R., KRAPF G., 1976, Effect of CO, pressure and alkali salt on the. Mechanism of decomposition of dolomite, Thermochim. Acta, 14, 221-243.
- 2. BOTHA A., STRYDOM C.A., 2001, Preparation of a magnesium carbonate from magnesium hydroxide, Hydrometallurgy, 62, 175-183.
- 3. CHOUDHARY V.R., RANE V.H., GADRE R.V., 1994, Influence of precursors used In preparation of MgO on its surface properties and catalytic activity in oxidative coupling of methane, J. Catal., 145, 300-311.
- 4. GENNARO A.R. (Ed.), 1985, Remington’s Pharmaceutical Sciences, 17 th Ed., Mack Publishing Company, Easton, 795-799.
- 5. HOLLINGBERG L.A., HULL T.R., 2010, The thermal decomposition of hunite and hydromagnesite – a review, Thermochim. Acta, 509, 1-11.
- 6. HONGCHANG H., SHAN H., JINGING F., HULIANG G., 2011, Effect of stearic acid, zinc stearate coating on the properties of synthetic hydromagnesite, Appl. Surf. Sci., 257, 2677-2682.
- 7. KHAN N., DOLLIMORE D., ALEXANDER K., WILBURN F.W., 2001, The origin of the exothermic peak in the thermal decomposition of basic magnesium carbonate, Thermochim. Acta, 367-368, 321-333.
- 8. MESHKANI F., REZAEI M., 2010, Effect of process parameters on the synthesis of nanocrystalline magnesium oxide with high surface area and plate-like shape by surfaktant assisted, Powder Technol., 199, 144-148.
- 9. MOROZOW S.A., MALKOV A.A., MALYGIN A.A., 2003, Synthesis of porous magnesium oxide by thermal decomposition of basic magnesium carbonate, Russ. J. Gen. Chem., 73, 37-42.
- 10. PANG C.L., THORNTON G., 2009, Manipulation of oxide surfaces, Surf. Sci., 603, 3255-3261.
- 11. PILARSKA A., JESIONOWSKI T., 2011, Synthesis of MgO in magnesium hydroxide carbonatisation process, Physicochem. Probl. Miner. Process, 46, 83 –94.
- 12. WANG W., QIAO X., CHEN J., LI H., 2007, Facile synthesis of magnesium oxide nanoplates via chemical precipitation, Mater. Lett., 61, 3218-3220.
- 13. VAGVÖLGYI V., HALES M., FROST R.L., LOCKE A., KRISTOF J., HORVATH E., 2008, Conventional and controlled rate thermal analysis of nesquehonite Mg(HCO3)(OH)·2(H2O), J. Therm. Anal. Calorim., 94, 523-528.
- 14. YILDRIM M., AKARSU H., 2010, Preparation of magnesium oxide (MgO) from dolomite by leach – precipitation – pyrohydrolysis process, Physicochem. Probl. Miner. Process, 44, 257-272.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT2-0003-0034