钙镁铝复合金属氧化物催化微藻油脂制备生物柴油

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陈颖,朱葛,孙羽佳

(东北石油大学 化学化工学院，黑龙江 大庆163318)

摘要： 采用共沉淀法制备钙镁铝类水滑石化合物，并以其作为前驱体，再经高温煅烧后制得钙镁铝复合金属氧化物催化剂，并考察了煅烧温度、碱度、碱土金属含量、醇油比和反应温度对生物柴油转化率的影响。当催化剂煅烧温度为400℃，钙镁铝物质的量比为15∶45∶2，醇油物质的量比为14∶1，催化剂质量分数45%，反应温度为65 ℃，反应时间5 h时，转化率达到最高93%。因此，这类具有高活性的催化剂在制备生物柴油中有良好的应用前景。

关键词： 生物柴油； 钙镁铝复合金属氧化物； 酯化反应； 微藻

中图分类号：TQ 426.83文献标志码：A 

Preparation of Biodiesel by CaMgAl Composite Metal Oxides Catalyzed Microalgae Oil

CHEN Ying， ZHU Ge， SUN Yujia

(School of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China)

Abstract: Calcium magnesium aluminum hydrotalcite prepared by coprecipitation method, the precursor prepared for CaMgAl metal oxide catalyst by calcination. In the artical, it studied the biodiesel conversion influence of calcination temperature, alkalinity, alkaline earth metal content, alcoholoil ratio and reaction temperature. When the catalyst was calcined at 400℃,CaMgAl mole ratio of 1.5∶4.5∶2, Alcohol oil mole ratio of 14∶1, the catalyst loading of 4.5%, the reaction temperature is 65 ℃, the reaction time is  5 h, the conversion rate of 93%. In the preparation of biodiesel, the high activity catalyst has good application prospects.

Key words:  biodiesel; CaMgAl composite metal oxides; esterification reaction; microalgae 

收稿日期：20150313

作者简介： 陈颖(1965—)，女，教授.

文章编号：16726987（2016）03026005； DOI： 10.16351/j.16726987.2016.03.005