液相沉淀法是最为常见的催化剂生产方法之一，广泛用于制备高含量非贵金属、金属氧化物催化剂或载体。实验室或工业生产中沉淀过程通常在间歇搅拌釜内进行，存在产品粒度分布宽、批次间重复性差、生产效率低等问题。微化工技术作为过程强化的重要手段，为解决上述问题提供了新的契机。本申请以用于甲醇水蒸气重整反应的铜基催化剂和氧化锌基复合氧化物为范例，通过对微反应器的合理设计及外场的有效引入，最大限度强化沉淀过程中的微观混合效率，实现微反应器内高活性、高选择性催化剂的可控制备和连续生产。系统研究微通道构型及外场对催化剂相关参数和反应性能的影响规律，建立针对沉淀过程由单通道到多通道微反应器的并行放大理论，以期为微反应器内其他催化材料的连续可控制备提供理论依据，促进催化材料的制备工艺由批量加工向连续加工演进。

Precipitation is one of the most frequently applied methodsto prepare non-noble metal and metal oxide catalysts, which is generally operated in the conventional stirred tank reactors. However, the less efficient mass and heat transfer in stirred tank reactors always leads to the formation of catalysts with broad particle size distribution and unconstant product quality. Microreaction technology as one of the most important process intensification technologies offers a potential remedy to solve the problems existing in the conventional precipitation process. This proposal aims at the uniform, controllable and continuous preparation of industrial catalysts in microchannel reactors. This proposal plans to intensify the micromixing via the rational design of the microchannel reactors and optimal screening of the reaction conditions in order to achieve the controllable and continuous preparation of the catalysts with high activity and selectivity. The research is dedicated to the systematic study of the correlation between the configuration of microchannel reactor and the catalyst structure as well as activity,and the establishment of theory involved in the numbering-up methodology.