中文摘要：

首次将钙钛石BiMnO3用于低温条件下NH3选择性催化还原NO反应中.结果表明,该催化剂在100～240oC范围内表现出较好的催化活性.实验和理论计算显示,相对于LaMnO3,BiMnO3优异的低温催化活性归因于其较强的Lewis酸性和较多的表面吸附氧物种.此外,BiMnO3还具有较好的抗水、抗硫性能.

英文摘要：

A perovskite was used for selective catalytic reduction of NO with NH3 （NH3-SCR） at low temperature in the presence of excess oxygen. The BiMnO3 perovskite catalyst showed high activity in NH3-SCR at 100-240℃. Experiment and DFT calculation showed that more Lewis acid sites and a high concentration of surface oxygen on BiMnO3 as compared with LaMnO3 were responsible for its better performance. In addition, BiMnO3 was also resistant to water vapor and a mixture of H2O and SO2.