Performance of magnesium hydroxide fluorides as heterogeneous acid catalyst for biodiesel production

S. Indrayanah, A. Rosyidah, H. Setyawati, I. K. Murwani

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12 Citations (Scopus)


The magnesium hydroxide fluorides, MgFx(OH)2-xwith different aging temperatures have been synthesized by the sol-gel method. The resulting materials were characterized by various techniques such as XRD, FT-IR, TG/DTG, N2adsorption-desorption, pyridine FT-IR and SEM, respectively. The catalytic evaluation of samples was investigated in the simultaneous transesterification and esterification between waste cooking oil (WCO) containing different %FFA and methanol to yield biodiesel. The performance of the catalyst, especially MgFx(OH)2-xaged at room temperature (RT) showed higher biodiesel yield compared to MgFx(OH)2-xwith increasing of aging temperature. The higher catalytic activity could be attributed to Brønsted acid site, pore diameter size and volume of the materials. Moreover, the yield of biodiesel was not correlated with the surface area of MgFx(OH)2-x.The reusability or lifetime of catalyst decreased after three runs used.

Original languageEnglish
Pages (from-to)312-320
Number of pages9
JournalRasayan Journal of Chemistry
Issue number1
Publication statusPublished - 1 Jan 2018


  • Aging temperature
  • Biodiesel
  • Heterogeneous acid catalyst
  • MgF(OH)
  • Waste cooking oil (WCO)


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