Preparation of an MFI-type zeolite membrane on a porous glass disc by substrate self-transformation

An MFI-type zeolite membrane containing boron has been prepared on the surface of a boron-silicon porous glass disc by substrate self-transformation in the vapor of ethylamine (EA) and H2O; both XRD and SEM show that the zeolite crystals on the surface of the porous glass disc were in random orientation; the thickness of the membrane layer was ca. 10-20 mu m; permeation of O-2 and N-2, and the chemical composition of the membrane were measured.