| Summary: | 碩士 === 高苑科技大學 === 化工與生化工程研究所 === 102 === In this study, the biodiesel is produced by the alkaline catalyst transesterification of soybean oil with four different alkyl alcohols (methanol, ethanol, n-propanol and n-butanol) and use Response Surface Methodology (RSM). Set the cnoditions of oil/ alkyl alcohols molar ratio, alkal catalyst and reaction temperature is in the range in low level to high level (oil/ alkyl alcohols ratio within 1: 5 ~ 1: 10, alkaline catalyst addition amount within 0.2 wt% ~ 0.8 wt%, reaction temperature within 40 ℃ ~ 140 ℃) on the biodiesel conversion rate of the cross relationship, to obtain the optimal conditions.
The results showed that the conversion of methanol and ethanol was more than 95% with the conversion of different alkyl alcohols (methanol, ethanol, n-propanol and n-butanol). Propanol and n-butanol conversion rate are unknown, but this follow-up will not be explored on time. In the oil/alcohol ratio of 1: 5 to 1:10 range, low-level and high-level were no significant differences, in the amount of alkali catalyst in 0.2 to 0.8 wt%, the low level of methanol as the main consideration factor, while the high-level ethanol as the main consideration factors in the reaction temperature of 40 to 140 ℃ range, methanol and ethanol are low-level standards as the main consideration factor.
Keywords：Biodiesel、alkyl alcohols、alkaline catalyst、conversion rate
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