 in the slurry thereby inducing adhesion of the slurry to the carrier, removing the carrier from the slurry, then blowing the carrier with compressed air thereby inducing removal of the excess slurry remaining in the cells, then drying the carrier at 000° C. and consequently inducing adhesion of the catalytic component to the carrier, thereafter calcinating the dried carrier in the air for one hour (000° C.) and consequently inducing 