气相“乙醇-空气”催化氧化制乙醛是传统乙烯氧化法的绿色可持续替代路线，但要求催化剂既具有优异的低温催化活性/选择性，又具备良好的催化剂床层热/质传递强化效能。基于我们近期关于原位反应条件下高活性纳米复合氧化物特定结构自组装的发现（ChemSusChem. 2017, DOI: 10.1002/cssc.201601848），本申请提出在3D整装泡沫/纤维基体上CuOx-CoOx纳米复合特定结构的“原位反应诱导定向构筑”，创制一种集低温催化活性/选择性高、热/质传递速率快和稳定可再生于一体的整装结构催化剂，实现“低温高活性/选择性-反应过程强化”的协同耦合。研究金属盐前体、泡沫/纤维基体表面特性等对CuOx-CoOx纳米复合特定结构（如核@壳、异质结等）反应诱导构筑的影响，阐明“反应诱导构筑-纳米复合特定结构-催化性能”的关系。开展CFD研究，揭示催化剂整装结构化设计对热/质传递的强化机制。

The gas-phase aerobic oxidation of ethanol to acetaldehyde is a green and sustainable alternative route for ethylene oxidation, but needs an ideal catalyst with both low-temperature activity/selectivity and intensified heat/mass transferring. Recently, we reported that the highly active nanocomposited oxides with specific structure could be induced by the real reaction (ChemSusChem. 2017,DOI:10.1002/cssc.201601848). Herein, we propose a strategy of “reaction-induced assembly of nanocomposited CuOx-CoOx with specific structure in-situ onto 3D Foam/Fiber”, with the aim to develop a monolithic catalyst with the combination of low-temperature activity/selectivity, high heat/mass transferring, and good stability/regenerability for the gas-phase oxidation of ethanol to acetaldehyde. With such combination, this catalyst can collaboratively couple the “low-temperature catalytic performance” with “reaction process intensification” for this reaction. The effects of the kinds of metal precursors, and Foam/Fiber surface properties, etc., will be systematically investigated on the reaction-induced assembly of CoOx-CuOx nanocomposites (such as core@shell or hetero-junction structure, etc.). The relationship among the “reaction-induced assembly, specific nanocomposites structure, and catalytic performance” will be illustrated. On the basis of CFD code Fluent, the intensification mechanism from the catalyst monolithic design will be deeply explored.