Leaching of phase-separated glasses in the Na2O-B2O3-SiO2-Fe2O3 system

Authors

  • M. Konon Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)
  • T. Antropova Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)
  • T. Kostyreva Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)
  • I. Drozdova Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)
  • I. Polyakova Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)

DOI:

https://doi.org/10.5755/j01.ct.67.1.14800

Keywords:

system Na2O-B2O3-SiO2-Fe2O3, phase-separated glasses, chemical durability, magnetite

Abstract

The leaching behavior of heat-treated phase-separated iron-containing sodium borosilicate glasses within the range of compositions of 8Na2O·(22 – х)B2O3·70SiO2·хFe2O3, where х varies from 0.3 to 10 mol.%, and (8 – x)Na2O∙22B2O3∙70SiO2· xFe2O3, where х varies from 2 to 6 mol.%, in the 3M aqueous HCl solution at boiling, was studied. It has been shown that the introduction of Fe2O3 in these phase-separated glasses increases their chemical durability, the values of porosity and the average pore diameter, but reduces the specific surface area in the porous glasses based on them, compared with glass without Fe2O3. The compositions suitable for producing porous glasses were determined.

DOI: http://dx.doi.org/10.5755/j01.ct.67.1.14800

Author Biographies

M. Konon, Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)

Laboratory of Physical Chemistry of Glasses

 

T. Antropova, Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)

Laboratory of Physical Chemistry of Glasses

T. Kostyreva, Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)

I. Drozdova, Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)

I. Polyakova, Institute of Silicate Chemistry, Russian Academy of Sciences (ISC RAS)

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Published

2016-08-01

Issue

Section

TECHNOLOGY OF INORGANIC MATERIALS