| 摘要 |
PROBLEM TO BE SOLVED: To improve the wear resistance of a catalyst by rolling and applying a catalyst paste obtained by adding a specified oxide or salt to titanium oxide and kneading on a reticular substrate, then drying and/or baking the paste to obtain a catalytic body and impregnating the catalytic body with a sol-like liq. contg. colloidal silica. SOLUTION: Molydbenum(Mo) and/or tungsten (W), the oxide or salt of vanadium(V), inorg. fiber and water are added to a titanium oxide (titania) row material having a high specific surface area, kneaded and made into paste. The obtained catalyst paste is applied on a metallic substrate or a ceramic reticular substrate and formed into sheet. The obtained catalyst-coated body is put between rollers or dies, formed into a specified shape, e.g. corrugated, and then baked to obtain a baked catalytic body. The baked catalytic body is impregnated with silica sol and finally dried and/or baked. Consequently, the colloidal silica grain is easily infiltrated, and a high-strength catalyst is obtained. |
