选择性催化还原NO_x催化剂的研究进展

Review of Catalysts for Selective Catalytic Reduction of NO_x

综述了选择性催化还原法脱除NOx的各类催化剂,包括贵金属、分子筛、金属氧化物等。传统催化剂由于不能同时兼备优良的催化活性、热稳定性、抗中毒能力,因此难以真正实现商业化。由不同类型催化剂优化组合而成的复合型催化剂和NOx的存储-还原型催化剂克服了传统催化剂的上述缺点,在脱除NOx领域具有广阔的应用前景。

This paper reviews various catalysts for removal of NO~ in selective catalytic reduction （SCR）, including noble metals, zeolites, metal oxides and so on. These traditional catalysts do not have excellent properties in all aspects such as catalytic activity, thermal stability and resistance against poisoning, so they can hardly be commercialized. However, composite type catalysts consisting of different kinds of catalysts and storage-reduction catalyst for NOx removal overcome the above disadvantages of traditional catalysts and have promising prospects.