Synthesis of palmitic acid-based esters and their effect on the pour point of palm oil methyl esters

Cheah Han Sern, Choo Yuen May, Zuriati Zakaria, Rusli Daik

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The objectives of this research were to synthesis palmitic acid-based esters and to study their effects on the pour point of palm oil methyl esters. Palmitic acid was esterified with six different branched-chain alcohols, namely 2-propanol, 2-butanol, 2-ethyl-l-hexanol, 2-methyl-l-butanol, 2-methyl-l-propanol and 2,2-dimethylpropane-l,3-diol. The purified products were characterized by FT-IR, 2H-NMR and 13C-NMR. The effect of the six synthesized palmitic acid-based esters on palm oil methyl esters (biodiesel) was later evaluated. The compounds under study were isopropyl palmitate (1), sec-butyl palmitate (2), 2-ethylhexyl palmitate (3), 2-methylbutyl palmitate (4), isobutyl palmitate (5) and 2,2-dimethylpropane-l,3-diyl daipalmitate (6). All of the synthesized compounds were miscible in palm oil methyl esters due to similar polarity of the solute and the biodiesel. The blends of the resultant six ester compounds in palm oil methyl esters were evaluated respectively for their effect on pour point property. The 2,2-dimethylpropane-l,3-diyl dipalmitate was able to improve the pour point of palm oil methyl esters from 12° to 9° when 5wt% was added.

Original languageEnglish
Pages (from-to)542-547
Number of pages6
JournalJournal of Oil Palm Research
Volume20
Issue numberDECEMBER
Publication statusPublished - Dec 2008

Fingerprint

pour point
Palmitic acid
Palm oil
Palmitic Acid
palm oils
palmitic acid
Esters
esters
palmitates
synthesis
Palmitates
Biofuels
2-Propanol
Propanol
biodiesel
butanol
Biodiesel
Butenes
Nuclear magnetic resonance
Hexanols

Keywords

  • Palm oil biodiesel
  • Palm oil methyl esters
  • Palmitic acid
  • Pour point
  • Pour point depressant

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Food Science
  • Renewable Energy, Sustainability and the Environment
  • Biomaterials

Cite this

Synthesis of palmitic acid-based esters and their effect on the pour point of palm oil methyl esters. / Sern, Cheah Han; May, Choo Yuen; Zakaria, Zuriati; Daik, Rusli.

In: Journal of Oil Palm Research, Vol. 20, No. DECEMBER, 12.2008, p. 542-547.

Research output: Contribution to journalArticle

Sern, Cheah Han ; May, Choo Yuen ; Zakaria, Zuriati ; Daik, Rusli. / Synthesis of palmitic acid-based esters and their effect on the pour point of palm oil methyl esters. In: Journal of Oil Palm Research. 2008 ; Vol. 20, No. DECEMBER. pp. 542-547.
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