Membrane Located Downstream of Reactor

Frequently the process stream exiting a reactor requires post-processing for a variety of reasons enriching the desired product from the product mixture to improve product yield, separating the produces) from the reactant(s) in the reaction mixture to obtain acceptable product concenU ation, preventing possible side reactions as a result of prolonged contact of some components in the reaction mixture, just to name a few. 

3 Membrane Holding but Detached from Catalyst Pellets 

In this case the membrane compartmentalizes a catalytic reactor and is not directly involved in the catalytic activity as the catalyst is not attached to the membrane. The catalyst pellets are often packed or fluidized on one (reaction) side of the membrane. The membrane functions su-ictly as a separator for fractionating product(s) or recovering catalyst or as a metering device for one of the reactants to provide controlled addition of that reactant to minimize undesirable side reactions. 

4 Membrane/Pore Surface Attached with Catalyst 

In a column (such as a packed or fluidized bed) reactor, the reaction conversion is often limited by the diffusion of rcactani(s) into the pores of the catalyst or catalyst carrier pellets or beads. On the other hand, when the catalyst is impregnated or immobilized within membrane pores, the combination of the open pore path and the applied pressure 

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