Highly selective glycerol esterification over silicotungstic acid nanoparticles on ionic liquid catalyst

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Abstract

The aim of this work was to study the production, characterization, and performance of ionic liquid (IL) on silicotungstic acid (STA-IL) via the sol-gel method as catalysts in the esterification of oleic acid (OA) and purified glycerol, as well as to examine the effects of IL on heterogeneous catalysts. The STA-IL catalyst showed a relatively high surface area of 88.36 m 2/g due to the presence of nanoporous silica. XPS analyses showed the significant formation of W-O-Si, W-O-W, and Si-O-Si bonding. The STA-IL catalyst enabled a conversion of 96% of OA with a significantly higher monoolein selectivity and yields of 96% and 92.2%, indicating that it is the more efficient solid acid catalyst. The presence of IL serves as PTC or medium, enhancing reaction synergistic effect. In addition, the ease of separation of the STA-IL catalyst due to its insolubility in the product phase can improve the recyclability.

Original languageEnglish
Pages (from-to)10285-10293
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume53
Issue number25
DOIs
Publication statusPublished - 25 Jun 2014

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Ionic Liquids
Esterification
Glycerol
Ionic liquids
Nanoparticles
Catalysts
Acids
Oleic acid
Oleic Acid
Factor IX
silicotungstic acid
Silicon Dioxide
Sol-gel process
X ray photoelectron spectroscopy
Solubility
Silica

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Highly selective glycerol esterification over silicotungstic acid nanoparticles on ionic liquid catalyst",
abstract = "The aim of this work was to study the production, characterization, and performance of ionic liquid (IL) on silicotungstic acid (STA-IL) via the sol-gel method as catalysts in the esterification of oleic acid (OA) and purified glycerol, as well as to examine the effects of IL on heterogeneous catalysts. The STA-IL catalyst showed a relatively high surface area of 88.36 m 2/g due to the presence of nanoporous silica. XPS analyses showed the significant formation of W-O-Si, W-O-W, and Si-O-Si bonding. The STA-IL catalyst enabled a conversion of 96{\%} of OA with a significantly higher monoolein selectivity and yields of 96{\%} and 92.2{\%}, indicating that it is the more efficient solid acid catalyst. The presence of IL serves as PTC or medium, enhancing reaction synergistic effect. In addition, the ease of separation of the STA-IL catalyst due to its insolubility in the product phase can improve the recyclability.",
author = "{Wan Nor Roslam}, {Wan Isahak} and Ramli, {Zatil A C} and Manal Ismail and Yarmo, {Mohd. Ambar}",
year = "2014",
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T1 - Highly selective glycerol esterification over silicotungstic acid nanoparticles on ionic liquid catalyst

AU - Wan Nor Roslam, Wan Isahak

AU - Ramli, Zatil A C

AU - Ismail, Manal

AU - Yarmo, Mohd. Ambar

PY - 2014/6/25

Y1 - 2014/6/25

N2 - The aim of this work was to study the production, characterization, and performance of ionic liquid (IL) on silicotungstic acid (STA-IL) via the sol-gel method as catalysts in the esterification of oleic acid (OA) and purified glycerol, as well as to examine the effects of IL on heterogeneous catalysts. The STA-IL catalyst showed a relatively high surface area of 88.36 m 2/g due to the presence of nanoporous silica. XPS analyses showed the significant formation of W-O-Si, W-O-W, and Si-O-Si bonding. The STA-IL catalyst enabled a conversion of 96% of OA with a significantly higher monoolein selectivity and yields of 96% and 92.2%, indicating that it is the more efficient solid acid catalyst. The presence of IL serves as PTC or medium, enhancing reaction synergistic effect. In addition, the ease of separation of the STA-IL catalyst due to its insolubility in the product phase can improve the recyclability.

AB - The aim of this work was to study the production, characterization, and performance of ionic liquid (IL) on silicotungstic acid (STA-IL) via the sol-gel method as catalysts in the esterification of oleic acid (OA) and purified glycerol, as well as to examine the effects of IL on heterogeneous catalysts. The STA-IL catalyst showed a relatively high surface area of 88.36 m 2/g due to the presence of nanoporous silica. XPS analyses showed the significant formation of W-O-Si, W-O-W, and Si-O-Si bonding. The STA-IL catalyst enabled a conversion of 96% of OA with a significantly higher monoolein selectivity and yields of 96% and 92.2%, indicating that it is the more efficient solid acid catalyst. The presence of IL serves as PTC or medium, enhancing reaction synergistic effect. In addition, the ease of separation of the STA-IL catalyst due to its insolubility in the product phase can improve the recyclability.

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