發(fā)布時間：2018-11-22 11:34

【摘要】：以大豆油為原料,以Novozym 435固定化脂肪酶為催化劑,采用滴加甲醇的方法制備生物柴油�？疾炝思状嫉渭铀俣取⑺奶砑恿�、反應(yīng)溫度、反應(yīng)級數(shù)對脂肪酸甲酯收率的影響。結(jié)果表明,甲醇滴加可以減弱甲醇對酶的毒害,達到添加叔戊醇相同的效果。甲醇的滴加速度、反應(yīng)溫度對脂肪酸甲酯收率有很大影響,可以調(diào)節(jié)甲醇的滴加速度和反應(yīng)溫度提高脂肪酸甲酯收率,甲醇滴加速度3.43×10-4g甲醇/(g油·min),反應(yīng)溫度60℃是適宜的反應(yīng)條件,在此條件下,產(chǎn)物收率可以達到98.75%。反應(yīng)生成的甘油會影響酶的活性和產(chǎn)物收率,采用二級反應(yīng),級間脫除甘油,有利于產(chǎn)物收率的提高。對于Novozym 435固定化脂肪酶,水的添加不利于產(chǎn)物收率的提高。
[Abstract]:Biodiesel was prepared using soybean oil as raw material and Novozym 435 immobilized lipase as catalyst. The effects of methanol droplet acceleration, water addition, reaction temperature and reaction order on the yield of fatty acid methyl ester were investigated. The results showed that the toxicity of methanol to enzyme could be reduced by adding methanol, and the effect of adding tert-amyl alcohol was the same as that of adding tert-amyl alcohol. The methanol droplet acceleration and reaction temperature have great influence on the yield of fatty acid methyl ester. The methanol drop acceleration and reaction temperature can increase the yield of fatty acid methyl ester. The methanol drop acceleration is 3.43 脳 10 ~ (-4) g methanol / (g oil min),). The reaction temperature of 60 鈩，

本文編號：2349236