Table 6 Summarizing the activity of ΑFe₂O₃/CuO nanocatalyst with other catalysts in transesterification reaction.

From: Incorporation of CuO on the αFe2O3 nanoparticles as a heterogeneous catalyst for conversion of waste cooking oil into biodiesel

Refs.

Yield (%)

Reaction parameters

Feedstock

Catalyst

52

93.2

12:1 CH3OH/oil proportion, 14 wt% catalyst dosage, reaction temperature of 55  °C for 1 h

Sunflower

MgO/MgAl₀.₄Fe₁.₆O₀.₄

53

91.2

9:1 CH3OH/oil molar ratio, catalyst dosage of 12 wt%, reaction temperature of 65  °C for 4 h.

Sunflower

MgO/MgFe₂O₄

15

92.72

12:1 CH3OH/oil molar ratio, 2.53 wt% catalyst dosage, 65 °C reaction temperature for 0.5 h

Sunflower

αFe₂O₃/ZnO

54

97.42

Temperature 62.36 °C, CH3OH/DWSO proportion 11:12, nanocatalyst dosage of 2.76 wt%, time 2.85 h

Dairy waste oil

CuO/RHA

41

98.04

Temperature 65 °C, CH3OH/DWSO proportion 12.75:1, nanocatalyst dosage of 1.53 wt%, time 7.17 min

Annona squamosa L. seed oil

Co3O4@rGO

45

97.81

Temperature 65 °C, CH3OH/DWSO proportion 11.24:1, nanocatalyst dosage of 2.41 wt%, time 36.62 min

Dairy waste oil

AC@ZnO/NiO

5

 

Temperature 65 °C, CH3OH/Castor oil proportion 18:1, nanocatalyst dosage of 3 wt%, time 120 min

Castor oil

Rice husk ash/CuO/K2CO3

This research

94.27

Temperature 62.36 °C, CH3OH/WCO proportion 11:1, nanocatalyst dosage of 2 wt%, temperature 60 °C for 3 h

Waste cooking oil

αFe2O3/CuO