Preparation of zeolite films using electrophoretic deposition method

Zeolite (Na-A, Na-Y, H-ZSM5) films were prepared by the electrophoretic dep osition method. In this paper, a 'non-sintering treatment' was investigated using the zeolite powder by addition of colloidal silica. As a result, the zeolite was deposited on the substrate from the following solvents; Na-A i n acetonitrile, Na-Y in acetone, H-ZSM5 in acetonitrile added benzoic acid. Zeolite films formed in the above solvents with colloidal silica upon heat ing at 400 degrees C. As a result, the Vickers hardness of the films increa sed with increasing the addition of colloidal silica. By the addition of co lloidal silica, the hard films mere prepared on the various shaped substrat es without sintering.