Depolymerization of polysilicic acid by tiron

Shuqin Bai, Yoshihiro Okaue, Takushi Yokoyama

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

As a preliminary experiment for the development of an effective silica scale inhibitor at geothermal power plants, the effect of tiron, a ligand to monosilicic acid, on the polymerization of silicic acid was investigated by gel chromatographic method. The experiments were carried out at Si concentration of 400 ppm (14 μM) and at pH 8 where are a similar condition to geothermal water. The tiron concentration was varied (0-50 μM). At 30 μM of tiron, the polymerization of silicic acid occurred rapidly within first 1 h in spite of the presence of tiron, however, polysilicic acids were depolymerized by tiron. The depolymerization mechanism of polysilicic acids was discussed based on zeta potentials for silica gel particles in the absence and presence of tiron.

Original languageEnglish
Pages (from-to)1795-1799
Number of pages5
JournalPolymer Degradation and Stability
Volume94
Issue number10
DOIs
Publication statusPublished - Jan 1 2009

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1,2-Dihydroxybenzene-3,5-Disulfonic Acid Disodium Salt
depolymerization
Depolymerization
acids
Acids
Silicic Acid
polymerization
Polymerization
Geothermal power plants
Silica gel
silica gel
Zeta potential
power plants
inhibitors
Silica Gel
Silicon Dioxide
Gels
Experiments
Ligands
Silica

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Depolymerization of polysilicic acid by tiron. / Bai, Shuqin; Okaue, Yoshihiro; Yokoyama, Takushi.

In: Polymer Degradation and Stability, Vol. 94, No. 10, 01.01.2009, p. 1795-1799.

Research output: Contribution to journalArticle

Bai, Shuqin ; Okaue, Yoshihiro ; Yokoyama, Takushi. / Depolymerization of polysilicic acid by tiron. In: Polymer Degradation and Stability. 2009 ; Vol. 94, No. 10. pp. 1795-1799.
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