Published Paper Details:

In the present study, a thin layer of MFI-type silicalite zeolite membrane is synthesized on porous silicon carbide supports (discs and tubes) by direct in situ crystallization and secondary growth technique via hydrothermal treatment for CO2/N2 separation. The influences of synthesis conditions are studied. The membranes are characterized for the formation of zeolite by X-Ray Diffractmeter (XRD) and crystal morphology by SEM. The permeation of single gases viz: H2, N2.CO2.Ar, SF6, and separation of mixed gases viz: H2/N2 and CO2/N2 are evaluated using gas chromatography. After optimizing conditions for disks samples, preparation of membrane on tubular silicon carbide supports will be taken up in an industrial reactor. The membrane module will be fabricated and tested for its performance.The secondary growth technique method resulted in uniform and thin layer of zeolite membrane on both disk and tubular supports. Single gas permeability results shows the permeability through the developed membrane is in the order of H2>CO2>N2>Ar. The highest separation factor for CO2/N2 mixed gas is obtained for MFI membrane formed on disk sample by secondary growth method.