| 固体碱K_2CO_3/Mg-Al-O催化酯交换制备生物柴油 |
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| 引用本文： | 周小伟,刘桂英,邢子龙,曲旭坡,杜长海.固体碱K_2CO_3/Mg-Al-O催化酯交换制备生物柴油[J].广东化工,2014(3):9-10. |
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| 作者姓名： | 周小伟 刘桂英 邢子龙 曲旭坡 杜长海 |
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| 作者单位： | [1]长春工业大学化工学院,吉林长春130012 [2]中国石油集团东北炼化工程有限公司吉林设计院,吉林吉林132002 [3]中国石油吉林油田公司新立采油厂,吉林前郭131109 |
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| 摘 要： | 以镁铝水滑石为前驱体,经焙烧后得到的镁铝复合氧化物为载体,制备了负载型K2CO3/Mg-Al-O固体碱催化剂,并用于大豆油酯交换合成生物柴油反应中。研究了活性组分K2CO3负载量对催化剂结构和性能的影响。结果表明,在K2CO3负载量为30%时,形成的钾铝氧化物种是催化剂强碱中心和活性提高的主要原因。考察了反应条件对催化剂性能的影响,在反应温度60℃、时间6 h、醇油摩尔比12∶1和催化剂用量2.0%的条件下,生物柴油收率最高为88.5%,催化剂具有较好的稳定性。
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| 关 键 词： | KCO/Mg-Al-O固体碱 生物柴油 镁铝复合氧化物 |
Preparation of Biodiesel by Transesterification over K2CO3/Mg-Al-O Solid Base Catalyst |
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| Zhou Xiaowei,Liu Guiying,Xing Zilong,Qu Xupo,Du Changhai.Preparation of Biodiesel by Transesterification over K2CO3/Mg-Al-O Solid Base Catalyst[J].Guangdong Chemical Industry,2014(3):9-10. |
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| Authors: | Zhou Xiaowei Liu Guiying Xing Zilong Qu Xupo Du Changhai |
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| Affiliation: | 1. School of Chemical Engineering, Changchun University of Technology, Changchun 130012 2. CNPC Northeast Refining ＆ Chemical Engineering Co. Ltd Jilin Design Institute, Jilin 132002： 3. Xin Li Exploit of Petro China, Jilin Oil Field Company, Qianguo 131109, China) |
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| Abstract: | Catalyst precursor Mg-AI hydrotalcite was prepared by coprecipitation and then the Mg-Al-O carrier was prepared by calcination. A series of Mg-AI-O supported K2CO3 catalysts were prepared to catalyze the transesterification of soybean oil for producing biodiesel. It is shown that the increased basic property and catalytic activity of K2CO3/Mg-Al-O catalyst loaded with 30 % K2CO3 are attributed to the new K-O-Al species produced by the interaction between support and K2CO3. The yields of biodiesel can reach 88,5 % under the conditions of reaction temperature 60 ℃, time 6 h, methanol / oil molar ratio 12：1 and catalyst amount 2.0 %. |
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| Keywords: | K2CO3/Mg-A1-O solid base catalyst biodieseh Mg-AI-O complex oxides |
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