Journal of Materials Science

, Volume 20, Issue 12, pp 4387–4391 | Cite as

Production and purification of silicon by calcium reduction of rice-husk white ash

  • P. Mishra
  • A. Chakraverty
  • H. D. Banerjee


Polycrystalline silicon of reasonable purity has been prepared by metallothermic reduction of purified rice-husk white ash (amorphous silica) by using calcium. The mechanism of reduction of the silica with calcium was investigated using simultaneous thermogravimetric analysis and differential thermal analysis, which revealed the reduction temperature to be around 720‡ C. The paper also discusses the method of preparation of silicon and its purification procedure. Characterization of the silicon sample thus prepared was made by X-ray diffraction, scanning electron microscopy and emission spectrography.


Polymer Calcium Silicon Electron Microscopy Scanning Electron Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    J. Dielt, D. Helmreich andE. Sirtl, “Crystals: Growth, Properties and Applications 5, Silicon” (Springer-Verlag, Berlin, 1981) p. 43.Google Scholar
  2. 2.
    L. P. Hunt, V. D. Dosaj, J. R. McCormic andL. D. Crossman, in Proceedings of the 12th IEEE Photovoltaic Specialists' Conference, Baton Rouge, Louisiana, November 1976, p. 125.Google Scholar
  3. 3.
    T. L. Chu, S. S. Chu andR. W. Kalm Jr,J. Electrochem. Soc. 125 (1978) 595.Google Scholar
  4. 4.
    M. F. Browning, J. M. Blochar Jr, W. J. Wilson andD. C. Carmichael, in Proceedings of the 12th IEEE Photovoltaic Specialists' Conference, Baton Rouge, Louisiana, November 1976, p. 130.Google Scholar
  5. 5.
    H. N. Archarya, S. K. Dutta, H. D. Banerjee andS. Basu,Mater. Lett. 1 (2) (1982) 64.Google Scholar
  6. 6.
    H. D. Banerjee, H. N. Acharya andS. K. Dutta,Indian J. Technol. 18 (2) (1980) 84.Google Scholar
  7. 7.
    H. N. Archarya, S. K. Dutta andH. D. Banerjee,Solar Energy Mater. 3 (1980) 441.Google Scholar
  8. 8.
    H. D. Banerjee, S. Sen andH. N. Acharya,Mater. Sci. Eng. 52 (1982) 173.Google Scholar
  9. 9.
    H. N. Acharya, H. D. Banerjee andS. Sen, Proceedings of the National Solar Energy Convention, Bombay, India, December 1979, p. 296.Google Scholar
  10. 10.
    D. F. Houston, “Rice Chemistry and Technology” (American Association of Cereal Chemists, St. Paul, Minnesota, 1972) p. 301.Google Scholar
  11. 11.
    R. Singh, B. K. Dhindaw andR. C. Maheswari,Agric. Mech. Asia, Afric. Latin Amer. 12 (3) (1981) p. 57.Google Scholar
  12. 12.
    J. A. Amic,J. Electrochem. Soc. 129 (1982) 864.Google Scholar
  13. 13.
    L. Pauling, “General Chemistry” (W. H. Freeman, San Francisco, 1961) p. 652.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1985

Authors and Affiliations

  • P. Mishra
    • 1
  • A. Chakraverty
    • 1
  • H. D. Banerjee
    • 2
  1. 1.Post Harvest Technology CentreIndian Institute of TechnologyKharagpurIndia
  2. 2.Material Science CentreIndian Institute of TechnologyKharagpurIndia

Personalised recommendations