Modified ZnO to Indonesia limestone as heterogeneous catalysts for biodiesel production from Reutealis trisperma oil

Raudhatus Shalihah, Nuni Widiarti, Suprapto, Emsal Yanuar, Didik Prasetyoko*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The Bukit Jaddih Madura limestone has been modified as a heterogeneous catalyst in the transesterification reaction for biodiesel production. Limestone has been calcined at 900°C for 3 hours (CL) and it has been modified with ZnO using a wet impregnation method (ZnO/CL) to improve its catalytic activity. Catalysts were characterized by infrared spectroscopy (FTIR), X-ray diffraction (XRD), SEM-EDX, and basicity test. FTIR analysis showed that BKK and ZnO/CL were easily hydrated and carbonated. It was determined that CL and ZnO/CL catalysts contained CaO, MgO, and a little Ca(OH)2 from the XRD analysis. Next, from SEM analysis, we are able to observe that CL and ZnO/CL had different morphologies and sizes. Basicity test showed base strength of CL was 15,0 <H_ <18,4 and ZnO/CL was 8,2 <H_ <15,0. The catalyst activity on the transesterification reaction of Reutealis trisperma oil with methanol showed that biodiesel yield increased with increasing ZnO concentration.

Original languageEnglish
Pages (from-to)649-653
Number of pages5
JournalMalaysian Journal of Fundamental and Applied Sciences
Volume16
Issue number6
DOIs
Publication statusPublished - Nov 2020

Keywords

  • Biodiesel
  • Limestone
  • Reutealis trisperma oil
  • ZnO/CL

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