Patent ID: 7097880
Filing Date: 2006-08-29
Classification: B01J

Abstract:
1. A method for impregnating a monolith substrate comprising: a. providing a system comprising a pressure tight chamber in communication with a vessel containing a catalyst solution including catalytically active materials; b. placing a monolith substrate in the pressure tight chamber; c. first purging, and then filling the pressure tight chamber with a dry gas; d. cooling the system including the monolith substrate to a temperature in the range between (T e. exerting a vacuum on the pressure tight chamber; f. filling of the pressure tight chamber with the catalyst solution; g. maintaining the monolith substrate in contact with the catalyst solution for a time sufficient to insure that all available pore volume in the monolith substrate is filled with catalyst solution to obtain an impregnated monolith substrate; h. subsequently emptying the pressure tight chamber of the catalyst solution; i. removing the impregnated monolith substrate from the pressure tight chamber; j. excess catalyst solution from the impregnated monolith substrate; and, k. further drying and calcining the impregnated monolith substrate.