Table 4.
Physicochemical properties of the biodiesel blends with additives: Results for 4-allyl-2,6-dimethoxyphenol (A) and catechol (C), blended with soybean and rapeseed biodiesel.
| Sample | Raw material/additive | Additive content [% (m/m)] | PetroOXY (min) | Rancimat (min) | CFPP (°C) | FP (°C) | Viscosity (m2/s·106)a |
|---|---|---|---|---|---|---|---|
| B13 | Soybean/- | 0 | 7.08 | 151.2 | −6.2 | 176.5 | 4.2 |
| BA1 | Soybean/A | 0.05 | 11.33 | 186.6 | −5.1 | 99 | 4.23 |
| BA2 | Soybean/A | 0.1 | 16.48 | 283.8 | −6.2 | 99 | 4.19 |
| BA3 | Soybeam/A | 0.3 | 23.62 | 323.7 | −6.2 | 164.5 | 4.21 |
| BC1 | Soybeam/C | 0.05 | 34.72 | 562.8 | −5.1 | 176.5 | 4.17 |
| BC2 | Soybean/C | 0.1 | 46.88 | 687 | −5.1 | 176.5 | 4.19 |
| BC3 | Soybean/C | 0.3 | 55.39 | 711.6 | −5.1 | 170.5 | 4.21 |
| B14 | Rapeseed/- | 0 | 14.93 | 208.2 | −9.5 | 179 | 4.52 |
| BA4 | Rapeseed/A | 0.05 | 20.2 | 349.2 | −11.7 | 128.5 | 4.57 |
| BA5 | Rapeseed/A | 0.1 | 24.28 | 447.6 | −12.8 | 172.5 | 4.59 |
| BA6 | Rapeseed/A | 0.3 | 36.75 | 497.7 | −12.8 | 176.5 | 4.52 |
| BC4 | Rapeseed/C | 0.05 | 29.83 | 447.6 | −11.7 | 162.5 | 4.51 |
| BC5 | Rapeseed/C | 0.1 | 45.73 | 570.4 | −11.7 | 158.5 | 4.51 |
| BC6 | Rapeseed/C | 0.3 | 52.63 | 673.2 | −13.9 | 174.5 | 4.55 |
a
Measured at 40°C.