Table 2.

Composition of the waste cooking oil feedstock and the product mixture of each catalytic process (SiO₂-SO₃H/Aliquat, SiO₃-SO₃H and SiO₃-SO₃H/(Buⁿ₄N)(BF₄) involving methanol in refluxing toluene.

Products	Waste Cooking Oil	SiO2-SO3H/Aliquat	SiO2-SO3H	SiO2-SO3H/[(Bun4N)](BF4)
Triacylglycerides (%)	96.2	0	0	0.7
Diacylglycerides (%)	2.80	9.5	13.9	2.5
Monoacylglycerides (%)	1	35.6	25.9	32.5
FAME (%)	0	54.9	60.2	64.2

Table 2. Numerical data for Figure 2.