Comparison of different heterogeneous catalysts for the estolides synthesis from oleic acid

Nor Asikin Mohamad Nordin, Nadia Farhana Adnan, Noraini Hamzah, Wan Isahak Wan Nor Roslam, Alifee Ayatillah, Jumat Salimon, Mohd. Ambar Yarmo, Rose Aini Kamaruddin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Different catalysts, namely various loading of perchloric acid on various supports; HClO4/silica (SiO2), HClO4/silica gel (SG) and HClO4/alumina (Al2O3) were tested for the direct addition reaction of oleic acid (OA) to form estolide compounds. The reactions were carried out under vacuum (2 mBar) for 10 hours at 70 °C under solvent-less conditions. LC-MS ToF of reaction products results showed chromatographic peaks for the presence of two new estolide compounds, oleic-oleic monoestolide acid (m/z 563.51, as [M-H]-), and oleic-oleic diestolide acid (m/z 845.77 [M-H]-). The optimum loading of HClO4 for every support are 15 wt.% HClO4/SiO2 (SiO215), 10 wt.% HClO4/SG (SG10) and 35 wt.% HClO4/Al 2O3 (Al2O335). The SG10 turned out to be the best catalyst, achieving a final conversion of 97.5 % with 79.8 % selectivity to oleic-oleic monoestolide acid and 17.7 % selectivity to oleic-oleic diestolide acid. The activity and selectivity of the SG10 have been investigated and compared with homogeneous HClO4. The optimum catalysts for every support were characterized by XPS analysis, BET, TEM and TPD-NH3.

Original languageEnglish
Title of host publicationAdvanced Materials Research
Pages288-292
Number of pages5
Volume364
DOIs
Publication statusPublished - 2012
Event2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011 - Selangor
Duration: 4 Jul 20115 Jul 2011

Publication series

NameAdvanced Materials Research
Volume364
ISSN (Print)10226680

Other

Other2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011
CitySelangor
Period4/7/115/7/11

Fingerprint

Oleic acid
Catalysts
Silica gel
Addition reactions
Temperature programmed desorption
Reaction products
Catalyst supports
Alumina
X ray photoelectron spectroscopy
Silica
Vacuum
Transmission electron microscopy
Acids

Keywords

  • Alumina
  • Estolide synthesis
  • Oleic acid
  • Silica
  • Silica gel

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Nordin, N. A. M., Adnan, N. F., Hamzah, N., Wan Nor Roslam, W. I., Ayatillah, A., Salimon, J., ... Kamaruddin, R. A. (2012). Comparison of different heterogeneous catalysts for the estolides synthesis from oleic acid. In Advanced Materials Research (Vol. 364, pp. 288-292). (Advanced Materials Research; Vol. 364). https://doi.org/10.4028/www.scientific.net/AMR.364.288

Comparison of different heterogeneous catalysts for the estolides synthesis from oleic acid. / Nordin, Nor Asikin Mohamad; Adnan, Nadia Farhana; Hamzah, Noraini; Wan Nor Roslam, Wan Isahak; Ayatillah, Alifee; Salimon, Jumat; Yarmo, Mohd. Ambar; Kamaruddin, Rose Aini.

Advanced Materials Research. Vol. 364 2012. p. 288-292 (Advanced Materials Research; Vol. 364).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nordin, NAM, Adnan, NF, Hamzah, N, Wan Nor Roslam, WI, Ayatillah, A, Salimon, J, Yarmo, MA & Kamaruddin, RA 2012, Comparison of different heterogeneous catalysts for the estolides synthesis from oleic acid. in Advanced Materials Research. vol. 364, Advanced Materials Research, vol. 364, pp. 288-292, 2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011, Selangor, 4/7/11. https://doi.org/10.4028/www.scientific.net/AMR.364.288
Nordin NAM, Adnan NF, Hamzah N, Wan Nor Roslam WI, Ayatillah A, Salimon J et al. Comparison of different heterogeneous catalysts for the estolides synthesis from oleic acid. In Advanced Materials Research. Vol. 364. 2012. p. 288-292. (Advanced Materials Research). https://doi.org/10.4028/www.scientific.net/AMR.364.288
Nordin, Nor Asikin Mohamad ; Adnan, Nadia Farhana ; Hamzah, Noraini ; Wan Nor Roslam, Wan Isahak ; Ayatillah, Alifee ; Salimon, Jumat ; Yarmo, Mohd. Ambar ; Kamaruddin, Rose Aini. / Comparison of different heterogeneous catalysts for the estolides synthesis from oleic acid. Advanced Materials Research. Vol. 364 2012. pp. 288-292 (Advanced Materials Research).
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abstract = "Different catalysts, namely various loading of perchloric acid on various supports; HClO4/silica (SiO2), HClO4/silica gel (SG) and HClO4/alumina (Al2O3) were tested for the direct addition reaction of oleic acid (OA) to form estolide compounds. The reactions were carried out under vacuum (2 mBar) for 10 hours at 70 °C under solvent-less conditions. LC-MS ToF of reaction products results showed chromatographic peaks for the presence of two new estolide compounds, oleic-oleic monoestolide acid (m/z 563.51, as [M-H]-), and oleic-oleic diestolide acid (m/z 845.77 [M-H]-). The optimum loading of HClO4 for every support are 15 wt.{\%} HClO4/SiO2 (SiO215), 10 wt.{\%} HClO4/SG (SG10) and 35 wt.{\%} HClO4/Al 2O3 (Al2O335). The SG10 turned out to be the best catalyst, achieving a final conversion of 97.5 {\%} with 79.8 {\%} selectivity to oleic-oleic monoestolide acid and 17.7 {\%} selectivity to oleic-oleic diestolide acid. The activity and selectivity of the SG10 have been investigated and compared with homogeneous HClO4. The optimum catalysts for every support were characterized by XPS analysis, BET, TEM and TPD-NH3.",
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AU - Adnan, Nadia Farhana

AU - Hamzah, Noraini

AU - Wan Nor Roslam, Wan Isahak

AU - Ayatillah, Alifee

AU - Salimon, Jumat

AU - Yarmo, Mohd. Ambar

AU - Kamaruddin, Rose Aini

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N2 - Different catalysts, namely various loading of perchloric acid on various supports; HClO4/silica (SiO2), HClO4/silica gel (SG) and HClO4/alumina (Al2O3) were tested for the direct addition reaction of oleic acid (OA) to form estolide compounds. The reactions were carried out under vacuum (2 mBar) for 10 hours at 70 °C under solvent-less conditions. LC-MS ToF of reaction products results showed chromatographic peaks for the presence of two new estolide compounds, oleic-oleic monoestolide acid (m/z 563.51, as [M-H]-), and oleic-oleic diestolide acid (m/z 845.77 [M-H]-). The optimum loading of HClO4 for every support are 15 wt.% HClO4/SiO2 (SiO215), 10 wt.% HClO4/SG (SG10) and 35 wt.% HClO4/Al 2O3 (Al2O335). The SG10 turned out to be the best catalyst, achieving a final conversion of 97.5 % with 79.8 % selectivity to oleic-oleic monoestolide acid and 17.7 % selectivity to oleic-oleic diestolide acid. The activity and selectivity of the SG10 have been investigated and compared with homogeneous HClO4. The optimum catalysts for every support were characterized by XPS analysis, BET, TEM and TPD-NH3.

AB - Different catalysts, namely various loading of perchloric acid on various supports; HClO4/silica (SiO2), HClO4/silica gel (SG) and HClO4/alumina (Al2O3) were tested for the direct addition reaction of oleic acid (OA) to form estolide compounds. The reactions were carried out under vacuum (2 mBar) for 10 hours at 70 °C under solvent-less conditions. LC-MS ToF of reaction products results showed chromatographic peaks for the presence of two new estolide compounds, oleic-oleic monoestolide acid (m/z 563.51, as [M-H]-), and oleic-oleic diestolide acid (m/z 845.77 [M-H]-). The optimum loading of HClO4 for every support are 15 wt.% HClO4/SiO2 (SiO215), 10 wt.% HClO4/SG (SG10) and 35 wt.% HClO4/Al 2O3 (Al2O335). The SG10 turned out to be the best catalyst, achieving a final conversion of 97.5 % with 79.8 % selectivity to oleic-oleic monoestolide acid and 17.7 % selectivity to oleic-oleic diestolide acid. The activity and selectivity of the SG10 have been investigated and compared with homogeneous HClO4. The optimum catalysts for every support were characterized by XPS analysis, BET, TEM and TPD-NH3.

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