Pd-based membranes are essential for the separation of hydrogen, and the performances of these membranes are largely determined by their thickness. In this study, a sacrificial graphene oxide (GO) interlayer and vacuum-assisted (V) dip-coating process were used synergistically to prepare ultra-thin Pd–Ag–Cu-based membranes that were deposited on an ultra-thin γ-AlO film-coated porous α-AlO hollow fiber support. For comparison purposes, Pd-, Pd–Ag-, and Pd–Cu-based membranes were also prepared using identical advanced procedures. The H flow of the newly developed advanced composite membranes produced by this work was then examined for temperatures in a range of 350–450 °C. The high-performance ultra-thin Pd-, Pd–Ag-, Pd–Cu-, and Pd–Ag–Cu-based hollow fiber membranes were assessed by comparison with both traditionally prepared membranes and previous results. An extraordinary H flux in the order of 119.53 mL/cm min has been obtained for a 1.43 μm-thickness Pd–Ag–Cu-based (V) γ-AlO/GO/α-AlO hollow fiber membrane at 450 °C. The advanced ultra-thin Pd–Ag–Cu-based membranes not only have very high permeance but can maintain their performance stability for more than one day of exercise at 450 °C.

中文翻译：

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高性能超薄支撑钯基膜的协同方法：牺牲氧化石墨烯夹层和真空辅助浸涂

钯基膜对于氢气的分离至关重要，这些膜的性能很大程度上取决于其厚度。在这项研究中，协同使用牺牲氧化石墨烯（GO）中间层和真空辅助（V）浸涂工艺来制备沉积在超薄γ-Al2O3上的超薄Pd-Ag-Cu基膜。薄膜涂层多孔 α-Al2O3 中空纤维载体。为了进行比较，还使用相同的先进程序制备了 Pd-、Pd-Ag- 和 Pd-Cu 基膜。然后在 350-450 °C 的温度范围内检查了由这项工作生产的新开发的先进复合膜的 H 流。通过与传统制备的膜和之前的结果进行比较，对高性能超薄 Pd-、Pd-Ag-、Pd-Cu-和 Pd-Ag-Cu 基中空纤维膜进行了评估。 1.43 μm 厚的 Pd-Ag-Cu 基 (V) γ-Al2O/GO/α-Al2O 中空纤维膜在 450 °C 下获得了 119.53 mL/cm min 的非凡 H 通量。先进的超薄Pd-Ag-Cu基膜不仅具有非常高的渗透性，而且可以在450°C的运动超过一天的情况下保持其性能稳定性。