Membrane pre-treatment process
AssigneeSmart (Isle of Man) Limited
InventorsGraham John Bratton, Karon Doreen Buck, Timothy de Villiers Naylor, Martin Grayling Major
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Abstract
An improved porous substrate for zeolite membranes is formed by coating the substrate with a layer of zeolite particles of a narrow particle distribution size of between 20 and 0.01 microns.
Claims12
A method of treating a porous substrate which has tubular conduits formed within it, which method comprises mixing together zeolite particles of different size distributions having a diameter of between 20 μm and 0.1 μm to form a suspension of the particles, passing the suspension of zeolite particles down through the tubular conduits and out through the walls of the tubular conduits so as to deposit a layer of zeolite particles on the inner surface of the tubular conduits.
A method of forming a zeolite membrane on the inner surface of tubular conduits formed within a porous substrate, which method comprises (i) forming a mixture of zeolite particles having a range of diameters of between 20 μm and 0.1 μm (ii) passing a suspension of the mixture down through the tubular conduits and out through the walls of the tubular conduits so as to deposit a layer of zeolite particles on the inner surface of the tubular conduits and (iii) depositing or crystallising a zeolite membrane on the zeolite particles by gel crystallisation.
Dependencies are inferred from the claim text.