Patent ID: 6200483
Filing Date: 2001-03-13
Classification: B01J,C02F

Abstract:
A method of making a monolithic structure for purification of a liquid stream, the method comprising:a) providing an inorganic substrate having an inlet end and an outlet end and a multiplicity of cells extending from inlet to outlet end, the cells being separated from one another by porous walls, the cells being alternatively plugged at each end such that a liquid stream entering the device through the unplugged cells at the inlet end passes through porous walls, and thereafter passes out of the device through unplugged cells at the outlet end;b) applying a coating consisting essentially of an active material, a binder, and water, wherein said active material is an inorganic ion exchange material selected from the group consisting of zeolite, gamma alumina, and titanium silicate, wherein the average particle size of the inorganic ion exchange material after calcination is greater than the average cell wall pore size of the substrate;c) drying the resulting substrate with the active material at a temperature no greater than about 200.degree. C.; andd) calcining the dried coated substrate at a temperature of no greater than about 650.degree. C., to bond the active material to the substrate.