Application of Multichannel Microreactors for Studying Heterogeneous Catalysed Gas Phase Reactions
Application of Multichannel Microreactors for Studying Heterogeneous Catalysed Gas Phase Reactions
复制标题
多通道微反应器在多相催化气相反应研究中的应用
DOI：
10.1205/026387603322302904
复制
发表时间：
2003
影响因子：
3.9
通讯作者：
M. Baerns
中科院分区：
文献类型：
--
作者：
N. Steinfeldt;N. Dropka;D. Wolf;M. Baerns
以VOx/Al2O3为催化材料，比较了两种多通道微反应器和一种小型固定床反应器在丙烷氧化脱氢反应中的催化性能。在等温条件下，两种类型的反应器表现出大致相同的催化结果(丙烷转化率和产物选择性)。然而，随着反应温度的升高，固定床反应器内出现了轴向温度梯度，这导致了不同类型反应器之间丙烷转化率和氧气转化率的差异。用动力学模型描述了多通道微反应器中的丙二醛反应。利用导出的动力学对单通道进行的计算流体动力学(CFD)模拟表明，在不锈钢多通道微反应器中，只有很小的轴向和横截面温度梯度(
The catalytic performances of two multichannel microreactors and a lab-scale fixed-bed reactor have been compared in the oxidative dehydrogenation of propane (ODP) over VO x /Al 2 O 3 as catalytic material. Under isothermal conditions both types of reactors showed approximately the same catalytic results (propane conversion and product selectivity). With increasing reaction temperature, however, axial temperature gradients appeared in the fixed bed reactor which led to differences in degrees of propane and oxygen conversion between the reactor types. The ODP reaction in the multichannel microreactor was described by a kinetic model. Computational fluid dynamics (CFD) simulations of a single channel using derived kinetics have shown that, in the stainless steel multichannel microreactor, only very small axial and cross-sectional temperature gradients (