We discuss our recent work on a new type of hybrid zeolite material, composed of a layered (2-D) zeolite MFI material grown epitaxially on the surface of a bulk zeolite MFI material, thereby resulting in a hybrid material containing a unique morphology of interconnected micropores (~0.55 nm) and mesopores (~4 nm). The structure and morphology of this material, referred to as a 'Bulk MFI-Layered MFI' (BMLM) material, was elucidated by a variety of characterizations. The synthesized BMLM material has been incorporated into a polyimide and fabricated into a composite membrane that shows enhanced permeability for CO2 and good CO2/CH4 selectivity for gas separations. SEM-EDX imaging and composition analysis showed that the polyimide and the BMLM interpenetrate into each other, thereby forming a well-adhered polymer/particle microstructure in contrast with the defective interfacial microstructure obtained using bare MFI particles.

Epitaxially grown layered MFI-bulk MFI hybrid zeolitic materials

245th National Meeting (2013)

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