【摘要】 分别从实验观测和理论分析角度,论述了多孔催化剂中超临界流体扩散、反应过程中出现的异常现象,总结了近临界区内扩散系数和本征反应速率常数的计算方法和步骤。在此基础上,对多孔催化剂中反应扩散过程在超临界条件下可能出现的奇异行为和变化规律进行了预测和分析更多还原

【Abstract】 The abnormal performance of diffusiononly and microreaction in porous catalysts for supercritical fluids was analyzed by way of both theoretical analysis and experimental results in literature. The calculation methodologies of diffusion coefficients and microreaction rate constants were summarized for supercritical fluids in the nearcritical region. Thereupon, the prediction of abnormal behaviors and inherent relationships for reaction and diffusion processes in porous catalysts was performed under supercritical conditions, which is useful to optimize supercritical reaction processes and reactor design.更多还原