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Hydrolysis of α, β-Layered Sodium Disilicate in Ions Binding Process

  • J.-X. Dong , L.-P. Li , H. Xu and J.-P. Li
Published/Copyright: March 30, 2013
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Tenside Surfactants Detergents
From the journal Tenside Surfactants Detergents Volume 45 Issue 1

Abstract

In different type water, the hydrolysis of α, β-Na2Si2O5 was investigated near washing clothing concentration by XRD, SEM chemical analysis and residual solid yield. β-Na2Si2O5 changed to kanemite in distilled water. In water with Ca2+ or Mg2+, β-Na2Si2O5 transformed to a mixture of kanemite, Ca(OH)2 and amorphous silicate or a mixture of kanemite (NaHSi2O5 ·3 H2O), Mg(OH)2 and amorphous silicate. α-Na2Si2O5 changed to an unknown phase in distilled water. In water with Ca2+ or Mg2+, α-Na2Si2O5 transformed to a mixture of unknown phase, Ca(OH)2 and amorphous silicate or a mixture of unknown phase, Mg(OH)2 and amorphous silicate. The experimental data showed that the divalent cation binding process of α, β-Na2Si2O5 belongs to a mixture process with divalent cations exchange with Na+ cation and precipitation in form of insoluble amorphous solid.

Kurzfassung

Die Hydrolyse von α-, β-Na2Si2O5 wurde unter Einsatz von XRD, SEM, chemischer Analyse und Restfestkörpergehaltsbestimmung in verschiedenen Wasserqualitäten, nahe der Konzentration, die üblicherweise beim Waschen von Kleidung eingesetzt wird, untersucht. β-Na2Si2O5 wird in destilliertem Wasser zu Kanemit überführt. In Wasser mit Ca2+ oder Mg2+ transformiert β-Na2Si2O5 in eine Mischung aus Kanemit, Ca(OH)2 und einem amorphen Silikat oder in eine Mischung aus Kanemit (NaHSi2O5 · 3 H2O), Mg(OH)2 und einem amorphen Silikat. α-Na2Si2O5 verwandelt sich in destilliertem Wasser in eine Mischung mit unbekannter Phase. In Wasser mit Ca2+ oder Mg2+ transformiert α-Na2Si2O5 in eine Mischung mit unbekannter Phase, Ca(OH)2 und einem amorphen Silikat, oder in eine Mischung mit unbekannter Phase, Mg(OH)2 und einem amorphen Silikat. Die experimentellen Messwerte zeigen, dass der zweiwertige Ionenbindungsprozess von α-, β-Na2Si2O5 zu einem Mischprozess mit zweiwertigem Kationenaustausch durch Na+ Kationen und Ausfällungen in Form von unlöslichem amorphem Feststoff gehört.

Key words:: α; β-layered sodium disilicate; hydrolysis; ion binding process; mechanism
Stichwörter:: α-; β-Schicht-Natriumdisilikat; Hydrolyse; Ionenbindungsprozess; Mechanismus
∗ Jin-xiang Dong, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, Shanxi Province, P. R. China, Tel.: 00 86-3 51-6 01 05 50-8. E-mail:

Jin-Xiang Dong, a professor of Taiyuan University of Technology, has been studying the application and synthesis of inorganic porous materials for 20 years.

Li-ping Li is an assistant professor of University of Shanxi Datong, has been studing character and application of inorganic porous materials.

Hong Xu, a vice-professor of Taiyuan University of Technology, has been studying the application and synthesis of inorganic materials for 10 years.

Jinping Li, a professor of Taiyuan University of Technology, has been studying the hydrogen storage materials for 20 years.

References

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Received: 2007-05-12
Published Online: 2013-03-30
Published in Print: 2008-01-01

© 2008, Carl Hanser Publisher, Munich

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  2. Contents
  3. Abstracts
  4. Abstracts
  5. Application
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  10. Physical Chemistry
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https://doi.org/10.3139/113.100356
Keywords for this article
α; β-layered sodium disilicate; hydrolysis; ion binding process; mechanism

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. Application
  6. Hydrolysis of α, β-Layered Sodium Disilicate in Ions Binding Process
  7. Textile Softeners on Cotton Dyed with Direct Dyes: Reflectance and Fastness Assessments
  8. Environmental Chemistry
  9. Interaction between Lemna Minor and Anionic Surfactants
  10. Physical Chemistry
  11. The Prediction of Microemulsion Properties: Molecular Theory and the Lattice Fluid Self-Consistent Field Theory
  12. Synthesis
  13. Synthesis and Interfacial Properties of Dialkylbenzenesulfonates for Producting Low Interfacial Tensions
  14. GDCh-News
  15. Third European Detergents Conference Report
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