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OALib Journal期刊
ISSN: 2333-9721
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fe-ca磁性固体碱催化剂上菜籽油酯交换反应
, PP. 405-412
Keywords: 磁性固体碱催化剂,cao,fe2o3,生物柴油,菜籽油
Abstract:
？采用原位沉淀法合成了双功能磁性固体碱催化剂cao·γ-fe2o3,用于催化菜籽油酯交换反应制备生物柴油。利用xrd、bet、tg-dta、sem和vsm对催化剂进行了表征,用icp-aes对产物脂肪酸甲酯(fame)中ca、fe残留量进行了测定。结果表明,fe和ca两种组分间有较好复合,催化剂显示出较好的磁学性能,饱和磁化率达到45.7emu/g,明显高于文献报道的磁性碱催化剂。在温和的反应条件(常压、64℃、催化剂加入量为油重的2.5%、醇油摩尔比15、转速750r/min)下,反应2h,重复使用前三次酯交换反应转化率都维持在95%左右。
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