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 language | English |
|---|---|
| Pages (from-to) | 1795-1799 |
| Number of pages | 5 |
| Journal | Polymer Degradation and Stability |
| Volume | 94 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 2009 |
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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, 10.2009, p. 1795-1799.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Depolymerization of polysilicic acid by tiron
AU - Bai, Shuqin
AU - Okaue, Yoshihiro
AU - Yokoyama, Takushi
PY - 2009/10
Y1 - 2009/10
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=80051672321&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80051672321&partnerID=8YFLogxK
U2 - 10.1016/j.polymdegradstab.2009.06.006
DO - 10.1016/j.polymdegradstab.2009.06.006
M3 - Article
AN - SCOPUS:80051672321
VL - 94
SP - 1795
EP - 1799
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
SN - 0141-3910
IS - 10
ER -