METHOD FOR PREPARING NOBLE METAL CATALYST

摘要

Disclosed is a method for preparing a catalyst, comprising the following steps: (1) taking a noble metal salt solution A, adding a modified aluminium oxide carrier material, stirring until uniform and standing; (2) drying the material obtained in step (1) in a vacuum, and calcining at 500°C-600°C for 1-4 hours to obtain a powder material containing the noble metal; (3) mixing the noble metal powder material, an adhesive and other components to be added, and ball-milling to obtain a uniform slurry; (4) preparing a noble metal solution B and adjusting until the pH = 0.5-1; and (5) mixing the slurry of the step (3) with the noble metal solution B, coating on a carrier, drying, and calcining at 500°C-600°C for 1-2 hours to obtain the target product. The preparation method for the catalyst of the present invention is simple, the conditions of the preparation process are easy to control and the preparation method has strong practicality. The prepared catalyst has a good quality, a low ignition temperature and a high catalytic conversion rate for methane at a relatively low temperature.