• Role of adsorption on the growth of barium and lead tartrate crystals in silica gels

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    • Keywords


      Gel growth; barium tartrate; lead tartrate; adsorption; colloidal precipitate; dendrites

    • Abstract


      Barium and lead tartrate crystals were grown in silica gel by single diffusion method. At basic pH values, barium tartrate is precipitated as a white column of colloidal particles. This column appears to move down with increasing thickness. Finally crystals develop at the expense of this white column. Lead tartrate also is initially precipitated as a column of colloidal particles in the gel. On adding acetic acid or tartaric acid over the gel, this column transforms into dendrites and later into single crystals. The development of crystals from colloidal precipitate has been explained on the basis of adsorption.

    • Author Affiliations


      M Abdulkhadar1 2 M A Ittyachan1

      1. Department of Physics, University of Kerala, Kariavattom, Trivandrum - 695 581
      2. Department of Physics, Government Arts College, Trivandrum - 695 014
    • Dates

  • Journal of Chemical Sciences | News

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