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固定化脂肪酶催化制备生物柴油条件优化 被引量:16

Optimization Preparation of Biodiesel on Immobilized Lipase Catalyst
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摘要 本文探讨了以固定化脂肪酶为催化剂催化制备生物柴油中醇油比、水含量、游离脂肪酸酸值和催化剂使用寿命对菜子油酯交换反应的影响,并与以NaOH、固体碱纳米水滑石为催化剂生物柴油的制备条件相比较。研究表明:固定化脂肪酶为催化剂所需最佳醇油比最低,仅为4:1,游离脂肪酸含量对酯交换反应影响甚微,且有较强的抗水性,固定化脂肪酶催化剂可可重复使用6次;NaOH为催化剂酯交换反应抗水性最强,随游离脂肪酸的增加,酯交换转化率显著降低;纳米水滑石为催化剂可重复使用5次,酯交换产物易分离,所得产品完全符合德国生物柴油标准。 The influence of transesterification conversion was investigated with molar ratio of methanol to rapeoil,water content,dissociative fatty acid value and the life of catalyst using sodium hydroxide,solid alkali nanocrystaline Mg-Al hydrotalcite and immobilized lipase of Candida sp.99-125 as catalyst.The results showed that the best molar ratio of rape oil to methanol was just 4:1 using immobilized lipase of Candida sp.99-125 as catalyst and the influence of amount of fatty acid to transesterification convers...
出处 《天然产物研究与开发》 CAS CSCD 2008年第1期113-116,共4页 Natural Product Research and Development
基金 国家“863”项目(2003AA214061) 湖南省教育厅项目(06C816)
关键词 固定化脂肪酶 使用寿命 纳米水滑石 酯交换 immobilized lipase service life nanocrystalline hydrotalcite transesterification
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