限域催化提供了一条调控催化性能的重要途径。在氧化物纳米管体系中研究限域效应，有望获得深入理解和全新认识。然而，受传统制备方法限制，限域催化剂的合成手段、结构调控方法有限，阻碍了构效关系的建立。本项目拟利用原子层沉积构建出氧化物纳米管限域体系，对氧化物种类、限域孔径大小、管长度、亲水/疏水性等进行调控。研究这些结构因素如何改变限域材料对于反应分子的吸附势能，进而影响浓度富集效应，研究不同限域空间结构内金属粒子的电子状态，研究空间结构对于中间物种与活性位点的接触时间的影响规律，确立空间结构与限域效应之间的构效关系。以液相的苯酚加氢和气相的甲苯完全氧化为探针反应，考察限域效应对于催化反应性能的影响。进一步将表界面结构、氧空位等重要因素的调控与限域效应结合起来，协同提高催化性能。通过以上研究，揭示限域效应的物理化学本质，深化限域效应的催化理论，为催化性能的调控提供新的思路和科学依据。

Confined catalysis provides an important approach to modify the catalytic performance. The study of confinement effects in oxide nanotube confined system is expected to obtain thorough comprehensions and new knowledges. However, the lack of efficient means of synthesis and structure regulation in the traditional preparation methods hinders the establishment of structure-performance relationships. In this project, the catalysts confined in oxide nanotubes will be prepared by atomic layer deposition. Different oxide species, void pore sizes, tube lengths, hydrophilicity and hydrophobicity will be regulated. How these factors change the adsorption potential of the confined nanostructure for the reaction molecules, and then affect the concentration enrichment effects, the electronic states of metal particles in different confined nanostructures, and the influence of confined nanostructure on the contact time between reaction intermediates and active sites, will be studied. The relationship between the structure and the confinement effects of catalysts confined in oxide nanotubes will be resolved. The hydrogenation of phenol in the liquid phase and the complete oxidation of toluene in the gas phase will be carried out to study the impact of confinement effects on the catalytic performances. Furthermore, the regulation of interface structure and oxygen vacancy in oxide supported metal catalysts will be combined with the confinement effects, to improve the catalytic performance synergistically. These studies will reveal the essence of the catalytic confinement effects, further deepen the theory of the effects, and provide new ideas and scientific evidence for the improvement of catalytic performance in the reaction process.