Inorganic Membranes: Microstructural Design, Optimization and Reaction Studies

无机膜在分离和反应中的成功工业应用，关键取决于能否生产出具有所需微观结构、渗透性能、机械性能和热学性能的膜。在本项目中，将重点研究具有可控微结构的无机膜的制备以及膜微结构与性能之间的关系。重点将放在用于氢分离的Pd基复合膜和用于反应堆应用的多孔不锈钢膜上。在最初的实验中，已经证明了利用渗透压对化学镀薄膜进行精确的微结构控制。有关渗透对膜微结构和性能的影响的详细研究将会进行。将对优化合成的钯基膜的渗透性能的微结构参数进行表征。对于多孔膜，对于平行和连续的催化反应网络，将研究关于最佳非均匀膜渗透模式的问题。目的是通过实验和模型检验介孔不锈钢膜在反应条件下的性能。将研究调整膜结构和渗透特性的可能性，以优化反应器的性能。该项目将有助于理解合成和结构之间的基本关系以及结构对膜性能的影响。

The successful industrial application of inorganic membranes for separation and reaction depends critically on the ability to produce membranes of desired microstructural, permeation, mechanical, and thermal properties. In this project emphasis will be placed on the preparation of inorganic membranes with controlled microstructure and on the relationship between membrane microstructure and properties. The focus will be on Pd-based composite membranes for hydrogen separations and on porous stainless steel membranes for reactor applications. Precise microstructural control of electroless plated films by the use of osmotic pressure has been demonstrated in initial experiments. Detailed studies related to the influence of osmosis on membrane microstructure and properties will be conducted. Characterization of the microstructural parameters that optimize permeation performance of the synthesized Pd-based membranes will be performed. For porous membranes, issues concerning optimal nonuniform membrane permeation patterns will be investigated for parallel and consecutive catalytic reaction networks. The objective is to examine, both by experiments and models, the performance of mesoporous stainless steel membranes under reaction conditions. The possibility of tailoring the membrane structure and permeation characteristics will be investigated to optimize reactor performance. This project will contribute to an understanding of the fundamental relationship between synthesis and structure and the effects of structure on membrane properties.