强抗中毒、具有低温活性的新型催化剂是低温选择性催化还原(SCR)NOx领域的研究热点，也是低温NH3-SCR技术发展和应用的关键。本项目研究NRS-MnOx@TS-1/M1-M2Ox分子筛核壳结构低温脱硝催化剂的可控合成和结构控制、抗硫抗水性能及其催化作用机理。以活性组分锰氧化物纳米棒为核，通过微波水热等方法在内核上生成一层具有疏水性的TS-1分子筛薄层，研究内核尺寸、壳层厚度及合成方法等对催化剂低温SCR活性和抗中毒性能的影响；采用化学液相沉积法对催化剂壳层分子筛的孔径进行精准调控，研究催化剂壳层对SO2筛分效果及抗中毒性能的影响；通过分子模拟计算筛选抗硫抗水中毒的元素进行掺杂，构筑高活性强抗硫抗水性能的低温脱硝催化剂体系；结合理论计算和多种原位表征手段，揭示分子筛核壳结构催化剂的低温SCR反应机理和抗中毒机制，为强抗中毒、高活性低温SCR催化剂的设计和优化提供理论指导和技术支撑。

Low-temperature activity featured novel catalyst with strong resistance to poisoning has been a hot research issue in the field of selective catalytic reduction of nitrogen oxides at low temperature, which is also crucial for the development and application of low temperature NH3-SCR technologies. Hence, this project is to study controllable synthesis and structure control for NRS-MnOx@TS-1/M1-M2Ox zeolite core-shell low temperature SCR catalysts, resistance to sulfur dioxide and water vapour as well as the reaction mechanism. To be specific, manganese oxide nanorods as active component is the core, and a hydrophobic TS-1 molecular sieve thin layer is produced by microwave hydrothermal or other methods over the core, and the effects of core size, shell thickness, preparation methods on resistance to sulfur dioxide and water vapour as well as the low temperature SCR performance of the catalysts will be studied. The pore structure and aperture size of zeolite shell of catalysts will be regulated precisely by a chemical liquid deposition method, and then the screening effect of sulfur dioxide and anti-poisoning performance of the catalysts will be studied. Meanwhile, the fabrication of low temperature SCR catalysts with high activity as well as strong resistance to sulfur dioxide and water vapour are improved by molecular simulation calculation. Screening the elements of anti-sulfur and anti-water vapour poisoning by molecular simulation calculation is used for element doping. Combined with theoretical calculation and a variety of in situ characterization, zeolite core-shell catalysts' the low temperature SCR reaction mechanism and the mechanism of anti-poisoning will be revealed, which provides the technical support and theoretical guidance for designing and optimization of low temperature SCR catalysts with high activity and strong resistance to sulfur dioxide and water vapour.