Table 6.
FTIR result of soybean oil, biodiesel and diesel.
| Oil |
Biodiesel |
Diesel |
||||||
|---|---|---|---|---|---|---|---|---|
| Frequency range (cm−1) | Bonds | Compounds | Frequency range (cm−1) | Bonds | Compounds | Frequency range (cm−1) | Bonds | Compounds |
| 2925.532 | C–H stretching | alkane | 2923.46 | C–H stretching | alkane | 2927.46 | C–H stretching | alkane |
| 2856.106 | C–H stretching | Alkane | 2854.39 | C–H stretching | Alkane | 2859.963 | C–H stretching | alkane |
| 1745.291 | C = 0 | esters | 1736.88 | C O stretching | esters | 1463.73 | C–H bending | alkane |
| 1176.09 | C–O stretching | esters | 730.9 | = C–H Bend | alkenes | |||
| 1098.16 | C–O stretching | esters | ||||||
| 1034.12 | C–O stretching | esters | ||||||
| 721.8 | C–H Rock | alkanes | ||||||