Esterification of used vegetable oils using the heterogeneous WO3/ZrO2 catalyst for production of biodiesel

Young Moo Park, Joon Yeob Lee, Sang Ho Chung, In Seon Park, Seung Yeon Lee, Deog Keun Kim, Jin Suk Lee, Kwan Young Lee

Research output: Contribution to journalArticle

100 Citations (Scopus)

Abstract

Tungsten oxide zirconia, sulfated zirconia and Amberlyst-15 were examined as a catalyst for a conversion of used vegetable oils (VOs) to fatty acid methyl esters (FAMEs). Among them, tungsten oxide zirconia was a promising heterogeneous catalyst for the production of biodiesel fuels from used VOs because of high activity in the conversion over 93% and no leaching WO3 in the esterification reaction. The reaction conditions were optimized. A study for optimizing the reaction parameters such as the reaction temperature, stirring speed, WO3 loading over ZrO2 and reaction time, was carried out. The catalyst was characterized by BET, XRD, FT-IR, and NH3-TPD. With increasing WO3 loading over ZrO2, the triclinic phase of WO3 increased and the tetragonal phase of zirconia was clearly generated. The highest acid strength of 20 wt% tungsten oxide zirconia catalyst was confirmed by NH3-TPD analysis and the result was correlated to the highest catalytic activity of the esterification reaction.

Original languageEnglish
JournalBioresource Technology
Volume101
Issue number1 SUPPL.
DOIs
Publication statusPublished - 2010 Jan 1

Fingerprint

Plant Oils
Biofuels
vegetable oil
Vegetable oils
Esterification
Biodiesel
Zirconia
catalyst
tungsten
Catalysts
Tungsten
oxide
Temperature programmed desorption
Fatty acids
Leaching
ester
Catalyst activity
Esters
Fatty Acids
fatty acid

Keywords

  • Biodiesel
  • Esterification
  • Free fatty acid
  • Heterogeneous catalyst
  • Tungsten oxide zirconia

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

Cite this

Esterification of used vegetable oils using the heterogeneous WO3/ZrO2 catalyst for production of biodiesel. / Park, Young Moo; Lee, Joon Yeob; Chung, Sang Ho; Park, In Seon; Lee, Seung Yeon; Kim, Deog Keun; Lee, Jin Suk; Lee, Kwan Young.

In: Bioresource Technology, Vol. 101, No. 1 SUPPL., 01.01.2010.

Research output: Contribution to journalArticle

Park, Young Moo ; Lee, Joon Yeob ; Chung, Sang Ho ; Park, In Seon ; Lee, Seung Yeon ; Kim, Deog Keun ; Lee, Jin Suk ; Lee, Kwan Young. / Esterification of used vegetable oils using the heterogeneous WO3/ZrO2 catalyst for production of biodiesel. In: Bioresource Technology. 2010 ; Vol. 101, No. 1 SUPPL.
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