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一种具有短孔道(~200 nm)、大孔径(~9 nm)特征的有序介孔SiO_2材料被用于固定化脂肪酶LVK-s,并用于催化转化生物油脂产生物柴油。在橄榄油及粗餐饮废油底物体系中,分别于常温下60h反应后,脂肪酸甲酯(fatty acid methyl ester,FAME)的总收率为81.3%和84.1%,脂肪酶比活力分别仍可维持在80%和60%以上。该研究验证了短孔道、大孔径的有序介孔SiO_2材料可作为催化转化粗餐饮废油生产生物柴油的固定化酶催化剂的良好载体,对催化反应中保持高活性具有良好的促进作用。
An ordered mesoporous SiO 2 material with short pore (~ 200 nm) and large pore size (~ 9 nm) is used to immobilize lipase LVK-s and catalyze the conversion of bio-oil to biodiesel. The total yield of fatty acid methyl ester (FAME) was 81.3% and 84.1% in 60 ℃ reaction at room temperature in olive oil and crude meal waste oil substrate system respectively. The specific activity of lipase was still Maintain at 80% and above 60%. This study demonstrated that the mesoporous SiO 2 material with short pore size and large pore size can be used as a good carrier for the immobilized enzyme catalysts for the conversion of crude meal waste oil into biodiesel and has a good promotion effect for maintaining high activity in the catalytic reaction.