元素掺杂提高低温选择性催化还原法催化剂抗水抗硫性研究

H2O和SO2是烟气中的固有成分，而低温选择性催化还原法（LT-SCR）催化剂易受烟气中H2O和SO2中毒。元素掺杂改性是最有效的提高SCR催化剂抗水、抗硫性方法之一。本文介绍了元素掺杂改性提高Mn基、V基、Ce基、Fe基等低温SCR催化剂抗水、抗硫性方法，以及理论计算在抗水、抗硫低温脱硝催化剂设计中的应用。研究结果为提高低温SCR催化剂抗水、抗硫性优化设计及构建提供理论基础。

Study on Water-and Sulfur-Resistance of Low-Temperature SCR Catalysts Improved by Element Doping

H2O and SO2 are intrinsic components in flue gases, and low-temperature selective catalytic reduction (LT-SCR) catalysts are susceptible to H2O and SO2 poisoning. Elemental doping is one of the most effective methods to improve the water and sulfur resistance of SCR catalysts. The method of improving the water and sulfur resistance of Mn-, V-, Ce- and Fe-based low-temperature SCR catalysts by element doping was introduced, and the application of theoretical computation in the design of water- and sulfur-resistance of low-temperature DeNOx catalysts was presented. The research results provided a theoretical basis for the optimal design and construction of improved water- and sulfur-resistance of LT-SCR catalysts.