| 초록 |
Biodiesel is an attractive alternative to fossil fuel because of its similar characteristics to petro-diesel, its manufacturing processes generally contain a step carried out by either alkaline or acid homogeneous catalyst. However, the homogeneous liquid catalyst must be removed by a rather complex purification process. Solid heterogeneous catalysts have a potential to overcome these problems, strong acidic ion exchange resins and inorganic-oxide solid acids were studied but those have some undesirable characteristics, such as high cost, low activity, etc. In this study, bio-char from microalgae was tested as a potential matrix to be used for solid acid catalyst. The bio-char based catalyst was prepared after reacting bio-char with sulfuric acid and tested as a catalyst for trans-esterification of triolein and esterification of oleic acid using methanol. The potential of bio-char as a heterogeneous acid catalyst for biodiesel production was higher than that of Nafion, a representative strong acidic ion exchange resin. |
