12-Tungstophosphoric acid supported on MCM-41 for esterification of fatty acid under solvent-free condition

Joon Ching Juan, Jingchang Zhang, Mohd. Ambar Yarmo

Research output: Contribution to journalArticle

100 Citations (Scopus)

Abstract

The potential of supported 12-tungstophosphoric acid (HPW) is of great importance as acid catalyst. Therefore, a series solid acid catalysts, comprised of 10-50 wt.% HPW supported on MCM-41 were synthesized and characterized using XRD, FT-IR, BET and TEM. The catalytic activities of these catalysts were tested for esterification of lauric acid with butanol using Dean-Strak apparatus, under solvent-free conditions. The host material suffers severe structural distortions at higher loading, which lead to a considerable loss of long-range orders. Based on these experimental findings, the optimal conversion of lauric acid with loading of 30 wt.% HPW was found to be higher than other loading and bulk HPW. The reaction was also studied over commercially available liquid acid, such as sulfuric acid and p-toluene sulfonic acid. It is assumed that the reaction mainly occurs inside the mesopores of the partially distorted MCM-41 because HPW loaded on an as-synthesized catalyst shows lower conversion than that of calcined material.

Original languageEnglish
Pages (from-to)265-271
Number of pages7
JournalJournal of Molecular Catalysis A: Chemical
Volume267
Issue number1-2
DOIs
Publication statusPublished - 18 Apr 2007

Fingerprint

lauric acid
Esterification
Multicarrier modulation
fatty acids
Fatty acids
Fatty Acids
acids
Catalysts
Acids
catalysts
Butanols
Catalyst activity
sulfonic acid
sulfuric acid
Transmission electron microscopy
toluene
catalytic activity
MCM-41
12-tungstophosphoric acid
Butenes

Keywords

  • 12-Tungstophosphoric acid
  • Esterification
  • MCM-41
  • Solid acid catalyst

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Materials Science (miscellaneous)

Cite this

12-Tungstophosphoric acid supported on MCM-41 for esterification of fatty acid under solvent-free condition. / Juan, Joon Ching; Zhang, Jingchang; Yarmo, Mohd. Ambar.

In: Journal of Molecular Catalysis A: Chemical, Vol. 267, No. 1-2, 18.04.2007, p. 265-271.

Research output: Contribution to journalArticle

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