共查询到18条相似文献,搜索用时 62 毫秒
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固定化脂肪酶催化制备香叶树籽生物柴油研究 总被引:3,自引:0,他引:3
研究了Novozym 435和Lipozyme TLIM混合脂肪酶催化香叶树籽油制备生物柴油,2种酶按1:3质量比混合使用时,既可提高反应转化率,又可降低酶的使用成本.应用响应面优化法确定了固定化酶催化香叶树籽生物柴油的最优工艺参数,采用叔丁醇作为反应体系的溶剂,最优反应条件为反应温度38.5℃、甲醇与油摩尔比4:1、叔丁醇与油体积比1:1.5、酶用量为油质量的4%,此时反应转化率达90.09%.分析表明香叶树籽油的甘油三酯主要由短链脂肪酸甘油酯组成,生物柴油中原油的甘油三酯已完全转变成脂肪酸甲酯. 相似文献
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非均相催化法生产生物柴油的研究进展 总被引:1,自引:0,他引:1
综述了国内外非均相催化法生产生物柴油的现状,介绍了非均相固体酸催化剂、固体碱催化剂和固定化生物酶的最新研究进展,展望了未来生物柴油生产技术的发展趋势。 相似文献
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地沟油制备生物柴油研究进展 总被引:1,自引:0,他引:1
利用地沟油制备生物柴油,既可以实现地沟油的资源化利用,又可以大大降低生物柴油的生产成本。综述了以地沟油为原料,酯交换法制备生物柴油的原理及工艺,并对各种工艺进行了比较。 相似文献
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Chi-Yang Yu Liang-Yu Huang I-Ching Kuan Shiow-Ling Lee 《International journal of molecular sciences》2013,14(12):24074-24086
Biodiesel, a non-toxic and biodegradable fuel, has recently become a major source of renewable alternative fuels. Utilization of lipase as a biocatalyst to produce biodiesel has advantages over common alkaline catalysts such as mild reaction conditions, easy product separation, and use of waste cooking oil as raw material. In this study, Pseudomonas cepacia lipase immobilized onto magnetic nanoparticles (MNP) was used for biodiesel production from waste cooking oil. The optimal dosage of lipase-bound MNP was 40% (w/w of oil) and there was little difference between stepwise addition of methanol at 12 h- and 24 h-intervals. Reaction temperature, substrate molar ratio (methanol/oil), and water content (w/w of oil) were optimized using response surface methodology (RSM). The optimal reaction conditions were 44.2 °C, substrate molar ratio of 5.2, and water content of 12.5%. The predicted and experimental molar conversions of fatty acid methyl esters (FAME) were 80% and 79%, respectively. 相似文献