The effect of Rh3+ catalyst on the combustion characteristics of crude vegetable oil droplets

Hendry Y. Nanlohy, I. N.G. Wardana, Nurkholis Hamidi, Lilis Yuliati, Toshihisa Ueda

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


The effect of Rh3+ catalyst on the combustion of the Crude Vegetable Oil droplet, namely coconut, jatropha, and sunflower oil has been studied experimentally at atmospheric pressure and room temperature. The oil droplets contain multi-component elements that are saturated fatty acid, monounsaturated fatty acid, polyunsaturated fatty acid, and glycerol. Results demonstrated that the catalyst has a stronger influence on crude coconut oil (CCO) and crude sunflower seed oil (CSFO) polar compounds during combustion, indicated by a greater enlargement of their triglyceride chains relative to those in crude jatropha oil (CJO). The changes in triglyceride geometry were identified as the cause of the distinguishing CVO droplet combustion characteristics. During the heating process preceding ignition, internal evaporation occurs with the appearance of bubbles trapped in oil droplets, and it appears that the diameter of the CJO droplet is greater than that of CCO and CSFO. This result suggests that the non-polar CJO compounds are more saturated, requiring additional heat for evaporation and ignition. The results also show that the catalyst makes multi-step burning droplets becomes shorter in one stage with the highest burning temperature. This proves that the catalyst does not only enlarge the triglyceride geometry but also excites the electrons due to hydrogen atom attraction as well.

Original languageEnglish
Pages (from-to)220-232
Number of pages13
Publication statusPublished - 2018 May 15


  • Combustion characteristics
  • Crude vegetable oil droplet
  • Molecular geometry
  • Rh catalyst

ASJC Scopus subject areas

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry


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