Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids

Nor Asikin Mohamad Nordin, Noraini Hamzah, Nadia Farhana Adnan, Wan Isahak Wan Nor Roslam, Mohd Zahid Md Yusof, Jumat Salimon, Mohd. Ambar Yarmo

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

Abstract

Sol-gel silica-supported mineral acids (namely sol-gel perchloric acid (slg HClO4), sulfuric acid (slg H2SO4) and phosphoric acid (slg H3PO4), prepared by incorporating mineral acids molecules into silica via sol-gel technique, were used as an efficient heterogeneous catalyst for the direct addition reaction of oleic acid (OA) to form estolides compound. The reactions were carried out under vacuum (2 mBar) for 10 hours at 70oC under solvent-less conditions. Liquid chromatography-mass spectrometry time of flight (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 HClO4 solgel catalyst turned out to be the best catalyst, achieving a final conversion of 76.4% with 83.4% selectivity to oleic-oleic monoestolide acid (OOM) and 16.6% selectivity to oleic-oleic diestolide acid (OOD). The activity and selectivity of the mineral acid sol-gel catalysts have been investigated and compared with homogeneous HClO4. The samples were characterised by XRD, TPD-NH3 and XPS.

Original languageEnglish
Title of host publicationAdvanced Materials Research
Pages278-283
Number of pages6
Volume620
DOIs
Publication statusPublished - 2013
EventInternational Conference on X-Ray and related Technique in Research and Industry, ICXRI 2012 - Pulau Pinang
Duration: 3 Jul 20125 Jul 2012

Publication series

NameAdvanced Materials Research
Volume620
ISSN (Print)10226680

Other

OtherInternational Conference on X-Ray and related Technique in Research and Industry, ICXRI 2012
CityPulau Pinang
Period3/7/125/7/12

Fingerprint

Oleic acid
Sol-gels
Catalyst activity
Minerals
Silica
Acids
Catalysts
Addition reactions
Catalyst selectivity
Liquid chromatography
Phosphoric acid
Temperature programmed desorption
Reaction products
Sulfuric acid
Mass spectrometry
X ray photoelectron spectroscopy
Vacuum
Molecules

Keywords

  • Estolide synthesis
  • Mineral acids
  • Oleic acid
  • Sol-gel

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Nordin, N. A. M., Hamzah, N., Adnan, N. F., Wan Nor Roslam, W. I., Yusof, M. Z. M., Salimon, J., & Yarmo, M. A. (2013). Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids. In Advanced Materials Research (Vol. 620, pp. 278-283). (Advanced Materials Research; Vol. 620). https://doi.org/10.4028/www.scientific.net/AMR.620.278

Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids. / Nordin, Nor Asikin Mohamad; Hamzah, Noraini; Adnan, Nadia Farhana; Wan Nor Roslam, Wan Isahak; Yusof, Mohd Zahid Md; Salimon, Jumat; Yarmo, Mohd. Ambar.

Advanced Materials Research. Vol. 620 2013. p. 278-283 (Advanced Materials Research; Vol. 620).

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

Nordin, NAM, Hamzah, N, Adnan, NF, Wan Nor Roslam, WI, Yusof, MZM, Salimon, J & Yarmo, MA 2013, Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids. in Advanced Materials Research. vol. 620, Advanced Materials Research, vol. 620, pp. 278-283, International Conference on X-Ray and related Technique in Research and Industry, ICXRI 2012, Pulau Pinang, 3/7/12. https://doi.org/10.4028/www.scientific.net/AMR.620.278
Nordin NAM, Hamzah N, Adnan NF, Wan Nor Roslam WI, Yusof MZM, Salimon J et al. Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids. In Advanced Materials Research. Vol. 620. 2013. p. 278-283. (Advanced Materials Research). https://doi.org/10.4028/www.scientific.net/AMR.620.278
Nordin, Nor Asikin Mohamad ; Hamzah, Noraini ; Adnan, Nadia Farhana ; Wan Nor Roslam, Wan Isahak ; Yusof, Mohd Zahid Md ; Salimon, Jumat ; Yarmo, Mohd. Ambar. / Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids. Advanced Materials Research. Vol. 620 2013. pp. 278-283 (Advanced Materials Research).
@inproceedings{4322c306a56b4361abfd80077ae2b343,
title = "Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids",
abstract = "Sol-gel silica-supported mineral acids (namely sol-gel perchloric acid (slg HClO4), sulfuric acid (slg H2SO4) and phosphoric acid (slg H3PO4), prepared by incorporating mineral acids molecules into silica via sol-gel technique, were used as an efficient heterogeneous catalyst for the direct addition reaction of oleic acid (OA) to form estolides compound. The reactions were carried out under vacuum (2 mBar) for 10 hours at 70oC under solvent-less conditions. Liquid chromatography-mass spectrometry time of flight (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 HClO4 solgel catalyst turned out to be the best catalyst, achieving a final conversion of 76.4{\%} with 83.4{\%} selectivity to oleic-oleic monoestolide acid (OOM) and 16.6{\%} selectivity to oleic-oleic diestolide acid (OOD). The activity and selectivity of the mineral acid sol-gel catalysts have been investigated and compared with homogeneous HClO4. The samples were characterised by XRD, TPD-NH3 and XPS.",
keywords = "Estolide synthesis, Mineral acids, Oleic acid, Sol-gel",
author = "Nordin, {Nor Asikin Mohamad} and Noraini Hamzah and Adnan, {Nadia Farhana} and {Wan Nor Roslam}, {Wan Isahak} and Yusof, {Mohd Zahid Md} and Jumat Salimon and Yarmo, {Mohd. Ambar}",
year = "2013",
doi = "10.4028/www.scientific.net/AMR.620.278",
language = "English",
isbn = "9783037855607",
volume = "620",
series = "Advanced Materials Research",
pages = "278--283",
booktitle = "Advanced Materials Research",

}

TY - GEN

T1 - Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids

AU - Nordin, Nor Asikin Mohamad

AU - Hamzah, Noraini

AU - Adnan, Nadia Farhana

AU - Wan Nor Roslam, Wan Isahak

AU - Yusof, Mohd Zahid Md

AU - Salimon, Jumat

AU - Yarmo, Mohd. Ambar

PY - 2013

Y1 - 2013

N2 - Sol-gel silica-supported mineral acids (namely sol-gel perchloric acid (slg HClO4), sulfuric acid (slg H2SO4) and phosphoric acid (slg H3PO4), prepared by incorporating mineral acids molecules into silica via sol-gel technique, were used as an efficient heterogeneous catalyst for the direct addition reaction of oleic acid (OA) to form estolides compound. The reactions were carried out under vacuum (2 mBar) for 10 hours at 70oC under solvent-less conditions. Liquid chromatography-mass spectrometry time of flight (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 HClO4 solgel catalyst turned out to be the best catalyst, achieving a final conversion of 76.4% with 83.4% selectivity to oleic-oleic monoestolide acid (OOM) and 16.6% selectivity to oleic-oleic diestolide acid (OOD). The activity and selectivity of the mineral acid sol-gel catalysts have been investigated and compared with homogeneous HClO4. The samples were characterised by XRD, TPD-NH3 and XPS.

AB - Sol-gel silica-supported mineral acids (namely sol-gel perchloric acid (slg HClO4), sulfuric acid (slg H2SO4) and phosphoric acid (slg H3PO4), prepared by incorporating mineral acids molecules into silica via sol-gel technique, were used as an efficient heterogeneous catalyst for the direct addition reaction of oleic acid (OA) to form estolides compound. The reactions were carried out under vacuum (2 mBar) for 10 hours at 70oC under solvent-less conditions. Liquid chromatography-mass spectrometry time of flight (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 HClO4 solgel catalyst turned out to be the best catalyst, achieving a final conversion of 76.4% with 83.4% selectivity to oleic-oleic monoestolide acid (OOM) and 16.6% selectivity to oleic-oleic diestolide acid (OOD). The activity and selectivity of the mineral acid sol-gel catalysts have been investigated and compared with homogeneous HClO4. The samples were characterised by XRD, TPD-NH3 and XPS.

KW - Estolide synthesis

KW - Mineral acids

KW - Oleic acid

KW - Sol-gel

UR - http://www.scopus.com/inward/record.url?scp=84871865245&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84871865245&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/AMR.620.278

DO - 10.4028/www.scientific.net/AMR.620.278

M3 - Conference contribution

AN - SCOPUS:84871865245

SN - 9783037855607

VL - 620

T3 - Advanced Materials Research

SP - 278

EP - 283

BT - Advanced Materials Research

ER -