Separation of medical nanopowder from the natural minerals by supercritical CO2

Authors

  • J Oyun Chemistry Department, Ulaanbaatar school, National University of Mongolia

DOI:

https://doi.org/10.5564/mjc.v14i0.202

Keywords:

Supercritical CO2, saturated gas, nanopowder, spar, amorphous crystal

Abstract

Nano-sized medical raw material has been derived from the medical quality natural spar (CaCO3) without the use of chemical salt. The theoretical base of the method consists in the transferring and keeping CO2 to a supercritical state during thermo-chemical processing of the spar at 900-950°C. The supercritical CO2 has a form of solid solution that holds the properties of both gas and solid. Afterwards, with dissolving it in the animal milk, the solution is equalized by the sovent’s expansion with the decrease of temperature and creates amorphous crystal nanopowder. The size of the resultant product was determined both by XRD and TEM analysis as to be 13.51 nm (Lu »13.09 nm).

DOI: http://dx.doi.org/10.5564/mjc.v14i0.202

Mongolian Journal of Chemistry 14 (40), 2013, p66-70

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Published

2014-10-03

How to Cite

Oyun, J. (2014). Separation of medical nanopowder from the natural minerals by supercritical CO2. Mongolian Journal of Chemistry, 14, 66–70. https://doi.org/10.5564/mjc.v14i0.202

Issue

Vol. 14 (2013)

Section

Articles

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