Transesterification of rice bran oil to biodiesel using mesoporous NaBeta zeolite-supported molybdenum catalyst: Experimental and kinetic studies
Transesterification of rice bran oil to biodiesel using mesoporous NaBeta zeolite-supported molybdenum catalyst: Experimental and kinetic studies
复制标题
使用介孔NaBeta沸石负载钼催化剂将米糠油酯交换为生物柴油：实验和动力学研究
DOI：
10.1016/j.cej.2019.122839
复制
发表时间：
2020-02-15
影响因子：
15.1
通讯作者：
Wu, Guoqiang
中科院分区：
文献类型：
--
作者：
Chen, Chao;Cai, Lei;Wu, Guoqiang
在介孔共聚物（RCC）模板存在下成功合成了介孔NaBeta沸石，并精心制备了一系列具有不同Mo负载量的介孔NaBeta负载钼（xMo/NaBeta）催化剂，用于通过米糠油酯交换生产生物柴油。由于高度分散的Mo活性物质的形成以及Mo氧化物与载体之间良好的相互作用，所得催化剂在该酯交换反应中表现出高活性和优异的稳定性。所生产的生物柴油物理性能符合现行国际生物柴油标准。此外，还研究了在没有传质的情况下米糠油与甲醇在 7Mo/NaBeta 催化剂上发生酯交换反应的本征动力学。通过初始速率和反应物浓度数据建立相应的动力学方程，计算出表观活化能为59.05 kJ mol(-1)。
Mesoporous NaBeta zeolite was synthesized successfully in the presence of a mesoscale copolymer (RCC) template, and a series of mesoporous NaBeta-supported molybdenum with varying Mo loadings (xMo/NaBeta) catalysts were prepared carefully for biodiesel production via the transesterification of rice bran oil. The resultant catalyst exhibits high activity and excellent stability in this transesterification reaction, attributing to the formation of highly dispersed Mo active species and the well interaction between the Mo oxide species and support. The physical properties of the as-produced biodiesel accorded with the current international biodiesel standards. Furthermore, the intrinsic kinetics of the transesterification of rice bran oil with methanol over 7Mo/NaBeta catalyst was also studied in the absence of mass transfer. The corresponding kinetic equation was established by correlating the data of initial rate and reactant concentration, and the apparent activation energy was calculated to be 59.05 kJ mol(-1).