A new method for producing zeolitic monoliths is used to produce a ZSM-5 based monolith for gas separation. The new method involves the 3DFD (Three Dimensional Fiber Deposition) printing of several layers of zeolite fibers on top of each other in a well-defined way,resulting in an open monolithic structure with open and inter-connected channels. The monolithic structure, consisting of ZSM-5 zeolite, was characterized with SEM, Ar and Hg porosimetry. Single component isotherms of CO 2 , CH 4 and N 2 were recorded on the 3DFDprinted ZSM-5 monolith, at different temperatures (283K, 291K, 302K and 309K) using a gravimetric method. Isosteric heats of adsorption show that CO 2 is the most strongly adsorbing component, in order followed by CH 4 and N 2 . The monolithic structure was subjected to breakthrough separation experiments with CO 2 /N 2 and CO 2 /CH 4 gas mixtures.Excellent separation performance is achieved. Moreover, the ZSM-5 monolith can be easily regenerated in isothermal conditions.

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