Continuous transesterification to produce biodiesel under HTCC/Na2SiO3/NWF composite catalytic membrane in flow-through membrane reactor
Continuous transesterification to produce biodiesel under HTCC/Na2SiO3/NWF composite catalytic membrane in flow-through membrane reactor
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DOI：
10.1016/j.fuel.2016.12.089
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发表时间：
2017-06-01
期刊：
影响因子：
7.4
通讯作者：
Li, Jianxin
中科院分区：
文献类型：
--
作者：
Luo, Qingliang;He, Benqiao;Li, Jianxin
以聚丙烯无纺布为载体，采用非溶剂诱导相分离法制备了一种新型聚合物基碱性复合催化膜（PACCM），用于大豆油与甲醇的酯交换反应。在膜反应器中，在反应温度为60 ℃，甲醇/豆油摩尔比为9：1，停留时间为3913 s的条件下，在PACCM催化下，酯交换反应的转化率达到97.0%以上。当流速大于1.0ml·min（-1）时，PACCM内的外部传质阻力可以忽略不计。膜反应器中的酯交换反应是动力学控制的。结果表明，该催化剂具有良好的催化活性和稳定性。并且PACCM可以耐受小于3.0wt.%的水或小于1.5重量%当转化率达到90%以上时，原料中的FFA。(C)2016爱思唯尔有限公司版权所有
A novel polymer-based alkaline composite catalytic membrane (PACCM) for the transesterification of soybean oil with methanol in a flow-through mode, was prepared with sodium silicate (Na2SiO3) and N-[(2-hydroxy-3-trimethylammonium) propyl] chitosan chloride supported into polypropylene non-woven fabric by nonsolvent induced phase separation. The transesterification with a conversion of above 97.0% was achieved under the PACCMs in a membrane reactor under a molar ratio of methanol/soybean oil of 9: 1 and residence time of 3913 s at 60 degrees C. External mass-transfer resistance in the PACCM could be neglected when the flow rate was beyond 1.0 ml min(-1). The transesterification in the membrane reactor was kinetically controlled. The PACCMs showed a good catalytic activity and stability. And the PACCMs could tolerate less than 3.0 wt.% water or less than 1.5 wt.% FFA in the feedstock at which the conversion reached above 90%. (C) 2016 Elsevier Ltd. All rights reserved.