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Oligomerization of Glycerol on Layered Sodium Silicate Catalysts

  • Tong Zhang , Hongkuan Gu , Jinping Li and Jinxiang Dong
Published/Copyright: November 7, 2013
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Tenside Surfactants Detergents
From the journal Tenside Surfactants Detergents Volume 50 Issue 6

Abstract

The purpose of this paper is to describe an efficient, easily separable and environmentally friendly glycerin oligomerization catalyst. We explored the catalytic effect of five different layered sodium silicate materials on the oligomerization reaction of glycerol and compared them with Na2CO3. High performance liquid chromatography (HPLC) was used to analyze the product composition. The following reactivity order was observed: δ-Na2Si2O5≈β-Na2Si2O5≈α-Na2Si2O5 > Kanemite > Na-magadiite. δ-Na2Si2O5 showed good selectivity for diglycerol and triglycerol. It was found that 2 wt.% δ-Na2Si2O5 and 5 h at 260°C was the optimal set of reaction conditions. Under these conditions, 71.7% conversion of glycerol was achieved, with selectivity for diglycerol and triglycerol of 83.8%. The results reveal that δ-Na2Si2O5 is an effective catalyst for controlling the degree of polymerization of glycerol.

Kurzfassung

Zweck dieser Untersuchung ist es, einen effizienten, einfachen und umweltfreundlichen Oligorimerisierung-Katalysator für Glycerol zu beschreiben. Wir erforschten den katalytischen Einfluss von fünf verschiedenen Natriumschichtsilikaten auf die Oligomerisierungsreaktion von Glycerol und verglichen die Silikate mit Na2CO3. Die Produktzusammensetzung wurde mit Hilfe der HPLC bestimmt. Folgende Reaktionsordung wurde beobachtet: δ-Na2Si2O5≈β-Na2Si2O5≈α-Na2Si2O5 > Kanemit > Na-Magadiit. δ-Na2Si2O5 weist eine hohe Selektivität bezüglich Diglycerol und Triglycerol auf. Es wurde festgestellt, dass die optimalen Reaktionsbedingungen 2 wt.% δ-Na2Si2O5, 260°C und 5 Stunden sind. Unter diesen Bedingungen konnte eine 71,7%ige Umwandlung des Gylcerols erreicht werden, wobei die Selektivität für Diglycerol und Triglycerol 83,8% betrug. Die Ergebnisse machen deutlich, dass δ-Na2Si2O5 ein effektiver Katalysator für die Kontrolle des Polymerisationsgrad von Glycerol ist.

Key words:: Glycerol; oligomerization; layered sodium silicate; δ-Na2Si2O5
Stichwörter:: Gylcerol; Oligomerisierung; Natriumschichtsilikate; δ-Na2Si2O5
3Jinxiang Dong, Research Institute of Special Chemicals, Taiyuan University of Technology, 79# West Yingze Avenue, Wanbailin DistrictTaiyuan, Shanxi, 030024P.R. China, Tel.: +8613700512466, Fax: +860351-611-178, E-Mail:

Zhang Tong is a graduate student at Taiyuan University of Technology. She obtained her B.Sc. from Taiyuan University of Technology (2011). Her interests are focused on the synthesis and properties of glycerol derivative.

Gu Hongkuan was received his B.Sc. from North University of China (2008) and M.Sc. from Taiyuan University of Technology (2011). He is currently work in Lubricant Tianjin Company, SINOPEC, P.R. China.

Li Jinping was received his B.Sc., M.Sc. and Ph.D. from Taiyuan University of Technology. He is presently professor of Research Institute of Special Chemicals in Taiyuan University of Technology. His main research interests are synthesis and application of inorganic chemicals.

Dong Jinxiang was received his B.Sc., M.Sc. and Ph.D. from Taiyuan University of Technology (2005). He is professor of Research Institute of Special Chemicals in Taiyuan University of Technology. His interests are in synthesis, characterization and application of fine inorganic chemicals and utilization of biomass glycerol.

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Received: 2013-05-06
Revised: 2013-06-25
Published Online: 2013-11-07
Published in Print: 2013-11-15

© 2013, Carl Hanser Publisher, Munich

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https://doi.org/10.3139/113.110279
Keywords for this article
Glycerol; oligomerization; layered sodium silicate; δ-Na2Si2O5

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. Application
  6. Water-Dilutable Biocompatible Microemulsion Systems: Design and Characterisation
  7. Coal – Mycobacterium phlei Interaction and its Effect on Coal Cleaning
  8. Novel Surfactant
  9. Synthesis and Properties of N,N′-Bis(Sodium Lauryl Acyl Proyl Acid) Ethylenediamine
  10. Physical Chemistry
  11. Research of Surface Chemical Properties and Micellization Behavior of Sodium N-Lauroylglycine
  12. Synergistic Effects Between Sulfo-betain Zwitterionic Surfactant and Alcohol Ether Sulfate
  13. Research on the Emulsifying Ability of Surfactants in Crude Oil
  14. Selection of Promoter and Micellar Catalyst for Chromic Acid Oxidation of Tartaric Acid in Aqueous Medium at Room Temperature
  15. Synthesis
  16. Oligomerization of Glycerol on Layered Sodium Silicate Catalysts
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