CaO/Natural Dolomite as a Heterogeneous Catalyst for Biodiesel Production

Abstract

In the present study, the CaO/Natural Dolomite as a heterogeneous catalyst was applied to synthesize biodiesel from coconut oil. The physico-characteristics of CaO/Natural Dolomite catalyst were determined using X-ray diffraction (XRD), X-Ray Fluorescence, and porosity analysis (specific surface area, average pore size diameter and total pore volume). The performance of CaO/Natural Dolomite catalyst was examined in a batch reactor for transesterification reaction of coconut oil with methanol. From the experiments, the optimum process conditions were achieved at a 60°C of reaction temperature, a 5 wt.% of catalyst amount, and 6 : 1 of methanol to coconut oil mass ratio. The CaO/Natural Dolomite catalyst exhibits high catalytic activity and reliable to be applied in biodiesel synthesis as a heterogeneous base catalyst.

Efficient preparation of no-glycerol biodiesel by tri-component coupling transesterification catalyzed over pollen-derived CaO

“…10(a). It was observed that the variation of FAME yield at different dosages of 1/1-CaO(P)-700 sample in presence of mixed solution composed of 1/1/8 oil/methyl acetate/methanol at 65 ℃ for 3 h. As expected, the FAME yield grew from 12.25-92.69% as the number of CaO(P) increased from 5 wt% to 10 wt%, which was in agreement with other reported studies that more provision of active sites resulted in the easier attraction of triglyceride molecules and methanol to recombination [33] . On the contrary, an excess of added CaO(P) will make the catalytic effect reduce greatly, which was related to the increase in the viscosity of the reaction and the generation of side reactions such as saponi cation, expressed in the yield of 54.31% at 15 wt% CaO(P) [34] .…”

Coconut coir utilization as a catalyst precursor in the transesterification process of used cooking oil into cocodiesel

“…One method for reducing waste is using coconut coir as a raw material for a heterogeneous organic catalyst in biodiesel production. The use of heterogeneous or solid-phase catalysts has become the interest of researchers because it has advantages, including easy product separation, being environmentally friendly, and being inexpensive [3].…”