Abstract
Membrane reactors are promising for achieving a variety of thermodynamically limited reactions. However, few studies have focused on quantitative analysis of the coupling of reaction and separation matching of membranes. In this work, based on the experimental validation of the forced flow through principle of membrane reactors for catalytic CO2 cycloaddition, describes the membrane reaction performance of supported ionic liquid membranes (SILMs) in the presence of primary irreversible reactions, and draws on a dusty gas model to calculate fluxes within the gas pore space of the support. The degree of product separation is theoretically investigated in relation to the membrane permeation, the resistance difference between the ionic liquid membrane and the support, the liquid loading of the catalyst layer and the fluid flow rate, and adjustable parameters of the model are proposed to predict the SILM performance. In addition, two dimensionless numbers, namely Damköhler (Da) and Péclet (Pe) numbers, are introduced to correlate the equilibrium constant-conversion-DaPe relationship, and the reaction kinetics and permeate flux compatibility are analyzed with the help of CFD simulations, which incorporate parameters of operating conditions and stoichiometric coefficients of the reaction, as well as optimization of reactor geometrical, providing insights to achieve higher conversion improvements.
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