A novel method is presented for modeling steady state isotope transient kinetics of heterogeneous catalytic reactions when the flow regime is laminar and conversion is differential. It is based on a factorization theorem which is deduced from the observation that transport functions fluctuate radially in porous beds. Factorization separates the radial from axial and temporal coordinates of the flow rate and concentration functions. It is shown that in transient tracing with a differential conversion, the radial components of the transport functions in the material conservation equations can be integrated into constant parameters to be determined from experimental data. The method is in particular useful as the knowledge of the radial profile of velocity and other transport functions and parameters are not prerequisites for data correlation. The methodology was successfully applied to the adsorption of carbon monoxide in Boudouard reaction on an alumina supported palladium catalyst. © 2017 American Institute of Chemical Engineers AIChE J, 2017

中文翻译：

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等温差动管式催化反应器中低雷诺数同位素瞬态动力学模型

提出了一种新的建模方法，该模型用于在流态为层流且转化率不同的情况下，对非均相催化反应的稳态同位素瞬态动力学进行建模。它基于分解定理，该分解定理由以下观察得出：传输函数在多孔层中径向波动。分解使流量和浓度函数的径向坐标与轴向坐标和时间坐标分开。结果表明，在具有微分转换的瞬态示踪中，材料守恒方程中的传递函数的径向分量可以集成到恒定参数中，该常数参数可以根据实验数据确定。该方法特别有用，因为对速度的径向分布的了解以及其他传输函数和参数不是数据关联的先决条件。该方法已成功地应用于在氧化铝负载的钯催化剂上的Boudouard反应中一氧化碳的吸附。©2017美国化学工程师学会AIChE的Ĵ，2017年