蜂窝状催化剂的载体,通常是由硅酸盐高温烧结制备得到的材料。但因其比表面积小,仅0.1—1(米~2/克),需要在载体上涂载一层Al_2O涂层,使比表面积提高到2.5—40(米~2/克)。这样的载体,负载上活性组份,才能具有良好的催化性能。常规的涂层法是采用以铝盐(如硝酸铝)为原料的溶液浸渍法,或以铝胶为原料的浆液 Honeycomb catalyst carrier, usually silicate prepared by high temperature sintering of the material. But because of its small specific surface area, only 0.1-1 (m ~ 2 / g), it needs to be coated with a layer of Al_2O coating to increase the specific surface area to 2.5-40 (m ~ 2 / g). Such a carrier, load the active ingredient, in order to have good catalytic performance. Conventional coating method is the use of aluminum salt (such as aluminum nitrate) as the raw material solution impregnation method, or aluminum gel as a raw material slurry