摘要
研究了固定化脂肪酶催化菜籽油与甲醇合成生物柴油的反应,探索了有机溶剂和甲醇投加方式对固定化脂肪酶的催化活性和稳定性的影响,并比较了国产和进口固定化脂肪酶的活性和稳定性。研究结果表明,有机溶剂的使用可明显改善固定化脂肪酶的活性和稳定性;分批加入甲醇可以避免甲醇一次性加入对固定化脂肪酶活性的抑制作用;国产酶重复使用15次(连续反应45d),仍具有良好的催化活性,其稳定性可与进口酶相媲美,国产脂肪酶可代替进口酶用于生物柴油的生产。
Transesterification reaction for the production of biodiesel was performed from rapeseed oil and methanol using immobilized lipases ( Candida antarcgtica, Novonym 435 and LIPOLASEMT, named as lipase Ⅰ , lipase Ⅱ , and lipase Ⅲ , respectively). The results showed that the activity and stability of immobilized lipase could be improved by adding organic solvent in the reaction system or adding methanol through step-by-step. The immobilized lipase Ⅱ can be reused over 15 times (45 d)and its stability was similar to immobilized lipase Ⅰ .
出处
《中国油脂》
CAS
CSCD
北大核心
2005年第5期68-70,共3页
China Oils and Fats
基金
中国石油化工集团总公司资助项目(102019)
