| 摘要 |
PURPOSE:To obtain a catalyst capable of high denitration and with low SO2 oxidation capability by blending a double component oxide of titanium and silicon manufactured using specific technique, vanadium oxide and tungsten. CONSTITUTION:Soluble titanium compounds such as titanium tetrachloride and titanium sulphate, soluble silicon compound and/or silica gel are used as starting materials. If these materials are neutralized in an aqueous medium using ammonia to obtain a coprecipitate. Then this coprecipitate is allowed to ripe at pH value of 8.5 or higher for 20 hours or more, then is washed, dried and baked to obtain a double component oxide. Next 82 to 97wt.% of this double component oxide, 0.3 to 3wt.% of vanadium oxide and 3 to 15wt.% of tungsten oxide are blended. In addition, the double component oxide consists of 70 to 90% of titanium and 30 to 10% of silicon in terms of atom percentage. Subsequently, a catalyst obtained is characteristic of excellent denitration capability and low SO2 oxidation. |
