Patent ID: 7226884

Claim:
A method for preparing a composite for catalytic distillation comprising a substrate material, a modifying material and an active material, said substrate material comprising structured packing made up of porous metals or porous ceramic materials, said modifying material comprises at least one metal oxide, and said active material comprises an active component for a catalytic reaction, the method comprising the steps of: (1) coating a surface of the substrate material with the modifying material by using a thermo-chemical reaction process, which comprises the steps of: a) preparing a water-based coating material in which superfine particles with particle size below 10 μm of the modifying material are dispersed in a solution, wherein a ratio of modifying material to water is in a range between 1:2 and 1:5, and a pH of the solution is adjusted to a range between 2 and 4, and b) coating the substrate material with the water-based coating material obtained from step a), and the obtained substrate material is subjected to drying and curing treatment to form a modified coat on the surfaces of the substrate material; and (2) loading the active material containing active components onto the modifying material by using a dip-or spray-coating process.