Novel asymmetric hydrogen permeable membranes consist of a dense ceramic–ceramic (cercer) composite layer of La_0.87Sr_0.13CrO_3-δ and La₂₇W_3.5Mo_1.5O_55.5-δ deposited on a tubular porous support of the latter composition. The membranes were produced by extrusion and dip-coating with various thermal cycles required for adjusting the thermal shrinkage of the different layers and obtaining gas tight membrane layers. The produced asymmetric membranes have a dense cercer layer thicknesses ranging from 25 to 50 μm on supports exhibiting a porosity of up to 40 vol%. The effect of processing parameters, such as volume of pore former, coating steps, sintering temperature and soaking time on the microstructure of the membranes is discussed to highlight critical steps in the manufacturing protocol. Hydrogen fluxes were measured as a function of temperature with both wet and dry Ar sweep gas. Results are discussed with respect to membrane architectures and materials properties.

新型不对称透氢膜由致密的陶瓷-陶瓷（陶瓷）复合层组成，该复合层为La _0.87 Sr _0.13 CrO3 _-δ和La ₂₇ W _3.5 Mo _1.5 O _{55.5- δ}沉积在后一种组合物的管状多孔载体上。该膜是通过挤出和浸涂而制成的，具有调节不同层的热收缩并获得气密性膜层所需的各种热循环。所产生的不对称膜在载体上具有致密的cercer层厚度，范围为25至50μm，表现出高达40 vol％的孔隙率。讨论了加工参数（例如成孔剂的体积，涂覆步骤，烧结温度和均热时间）对膜微结构的影响，以突出制造流程中的关键步骤。用湿和干Ar吹扫气测量氢通量随温度的变化。讨论了有关膜结构和材料特性的结果。