TY - JOUR
T1 - Depolymerization of polysilicic acid by tiron
AU - Bai, Shuqin
AU - Okaue, Yoshihiro
AU - Yokoyama, Takushi
N1 - Funding Information:
The present work is supported by a Grant-in-Aid for the Global COE Program, “Science for Future Molecular Systems” from the Ministry of Education, Culture, Science, Sports and Technology of Japan. This study was also financially supported from Kyushu University Interdisciplinary Programs in Education and Projects in Research Development.
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.
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U2 - 10.1016/j.polymdegradstab.2009.06.006
DO - 10.1016/j.polymdegradstab.2009.06.006
M3 - Article
AN - SCOPUS:80051672321
SN - 0141-3910
VL - 94
SP - 1795
EP - 1799
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
IS - 10
ER -