在氧化铝负载的氧化钙和氧化镁催化剂上，将眼点拟微球藻的脂质酯交换为生物柴油。
Transesterification of Nannochloropsis oculata microalga's lipid to biodiesel on Al2O3 supported CaO and MgO catalysts.
作者信息
Umdu Emin Selahattin, Tuncer Mert, Seker Erol
机构信息
Izmir Institute of Technology, Chemical Engineering Department, Gulbahce Campus, Urla, Izmir 35430, Turkey.
出版信息
Bioresour Technol. 2009 Jun;100(11):2828-31. doi: 10.1016/j.biortech.2008.12.027. Epub 2009 Feb 7.
In this study, we present the activities of Al(2)O(3) supported CaO and MgO catalysts in the transesterification of lipid of yellow green microalgae, Nannochloropsis oculata, as a function of methanol amount and the CaO and MgO loadings at 50 degrees C. We found that pure CaO and MgO were not active and CaO/Al(2)O(3) catalyst among all the mixed oxide catalysts showed the highest activity. Not only the basic site density but also the basic strength is important to achieve the high biodiesel yield. Biodiesel yield over 80 wt.% CaO/Al(2)O(3) catalyst increased to 97.5% from 23% when methanol/lipid molar ratio was 30.
在本研究中，我们展示了负载于Al₂O₃上的CaO和MgO催化剂在黄绿微藻——眼点拟微球藻脂质的酯交换反应中的活性，该活性是50℃下甲醇用量以及CaO和MgO负载量的函数。我们发现纯CaO和MgO无活性，并且在所有混合氧化物催化剂中，CaO/Al₂O₃催化剂表现出最高活性。要实现高生物柴油产率，不仅碱性位点密度而且碱强度都很重要。当甲醇/脂质摩尔比为30时，超过80 wt.% CaO/Al₂O₃催化剂上的生物柴油产率从23%提高到了97.5%。
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