基于过渡金属Cu、Co的高催化活性，稀土Ce对活性催化组分的稳定和助催化作用以及TiO2复合氧化物气凝胶具有多孔性、大比表面积和良好机械性能的特点，提出构建一类新型过渡金属/气凝胶异质结纳米簇催化剂，用以实现低温低压条件下湿式催化氧化反应降解丙烯腈废水。利用工业废弃物粉煤灰和含Ti前体合成表面富含-OH和Al源的TiO2-SiO2-Al2O3三元复合氧化物气凝胶载体。以碱源励激结合原位合成技术，在载体表面生成共价化学键合的异质结纳米簇和类水滑石（HTlcs）微晶催化剂前体CuCoAl-HTlcs。基于HTlcs的晶格定位和异质结纳米簇的空间限域效应，实现催化组分在气凝胶载体表面的均匀负载、高度分散和牢固锚接。以此类功能性催化材料催化湿式氧化降解丙烯腈废水为探针反应，获取催化剂构效关系和催化反应机理的规律性认识，为低温低压湿式催化氧化反应体系新型催化剂的研究开发提供理论和实验依据。

Considering the high catalytic activity of transition metals such as Cu and Co, the stabilizing effect of cerium promoter on transition metals and structural porosity,large surface area and good mechanical strength of the TiO2 composite oxide aerogel, we present the idea of design and preparation of a new type of transition metals/aerogel heterojunction nanoclusters catalysts with high activity and stability used in heterogeneous catalytic wet oxidation of acrylonitrile wastewater under low temperature and pressure conditions. The fly ash and titanium-containing precursor are used to prepare TiO2-SiO2-Al2O3 composite oxide aerogel as catalyst carrier with high surface hydroxyl group and aluminium element concentrations. The heterojunction nanoclusters chemically bonded to the aerogel carrier and catalyst precursor, which is microcrystalline layered CuCoAl-Hydrotalcite-Like Compounds (CuCoAl-HTlcs), can be formed by using base excitation and in-situ synthesis method.The lattice-location effect of HTlcs and the confinement effect of the heterojunction nanoclusters are used to realize the uniform distribution and stable combination of the active components with TiO2 composite oxide aerogel.The relationship between the structure and performance of the transition metals/aerogel heterojunction nanoclusters catalysts and the mechanism of catalytic reaction are investigated by choosing the catalytic wet oxidation of acrylonitrile wastewater under low temperature and pressure conditions by the prepared functional catalysts as the probe reaction. The aim of this research work is to provide new ways and methods of developing new functional catalysts that can be applied in the catalytic wet oxidation processes under low temperature and pressure conditions.