挥发性有机化合物(VOCs)是形成大气污染的主要污染物之一，严重危害人们的身体健康。催化燃烧可以将VOCs降解为H2O和CO2，同时由于具有起燃温度低、无二次污染等特点成为最具应用前景的处理技术之一。吸附技术可以富集低浓度VOCs，但需要结合其他处理技术一起应用。本项目结合吸附和催化燃烧技术特点，拟设计制备以超细贵金属-MOx(M=Ce, Mn, Sn)复合纳米粒子为核、分子筛为壳层的吸附-催化双功能核壳催化剂用于典型VOCs（丙烷）的热催化降解。以贵金属-MOx复合纳米粒子为核，可有效提高贵金属的分散度并减少其用量；分子筛为壳层则可高效吸附低浓度VOCs，增加VOCs局部浓度，提高催化降解效率，尤其是利用分子筛壳层的限域效应，可有效防止贵金属的聚集、烧结。本项目将详细研究该双功能核壳催化剂的可控合成、吸附催化协同效应及对典型VOCs的吸附-矿化机理，为我国VOCs的治理做出贡献。

Volatile organic compounds (VOCs) were the main reasons for the formation of air pollution, which are seriously affect the people’s health. As everyone know that, catalytic combustion technology can totally degrade the VOCs to H2O and CO2 through no flame combustion. This kind of technique has become the most prospect treatment method for removal of VOCs with the advantages of low ignition temperature and no secondary pollution. Adsorption technology can concentrate the low content of VOCs, however, which need to combine other technology to remove or recycle it. According the advantages of catalytic combustion and adsorption technology, this project will design and synthesis a novel catalytic-adsorption bifunctional core-shell catalyst "noble metal-MOx(M=Ce, Mn, Sn)@zeolite" for removal of typical VOCs (propane), which the core is the ultra-small noble metal-MOx composite nanoparticles (NPs) and the shell is various zeolites. The ultra-small noble metal-MOx NPs as the core can utilize the synergy between noble metal and MOx to increase the dispersion of noble metal and to decrease its usage amount; the zeolites as shell can concentrate the low concentration of VOCs to high content and improve the degration rate of VOCs. Most importantly, the zeolite shell can protect the aggregation of noble NPs during the thermal catalysis process. The controllable synthesis of noble metal-MOx@zeolite, synergy between the core noble metal-MOx NPs and the shell zeolites, and the adsorption-mineralization mechanism of VOCs will also be investigated in detail. Through the implement of this project, we can make a contribution to the air pollution control, especially for VOCs removal.