Patent ID: 6383972
Filing Date: 2002-05-07
Classification: B01J,C07C,D01F

Abstract:
A method of preparing a catalyst support comprising making a rayon-precursor activated carbon fiber fabric and fixing a catalyst on the fabric, the method being characterized in that:making the activated carbon fiber fabric includes a stage of precarbonizing a rayon fiber fabric at a temperature in the range of 350Â° C. to 420Â° C. followed by a stage of final carbonization at a temperature in the range of 1000Â° C. to 1300Â° C., for a duration in the range of 0.7 min to 1.3 min, and of activation at a temperature in the range of 850Â° C. to 950Â° C., so that an activated carbon fiber fabric is obtained having pores with a mean size in the range of 0.3 nm to 3 nm, a carbon content greater than 99%, an ash content less than 0.3%, and an alkaline impurity content of less than 1500 ppm, and fixing the catalyst is performed by one of the following two methods: by impregnating the activated carbon fiber fabric with a composition containing a compound of the catalyst to be fixed; and by cationic exchange by immersing the activated carbon cloth in a bath containing a solution of a salt of the catalyst to be fixed.