ZIF-8 membranes were fabricated by a two-step procedure consisting of (1) a flexible and simple spray coating process to deposit uniform ZnO layers on different supports and (2) subsequent solvent-free transformation of the ZnO layers into dense ZIF-8 membranes by a vapor-solid reaction. The spray coating offered superior flexibility regarding the choice of support and yielded even and homogeneous ZnO layers with thicknesses of 5–10 μm on non-porous crude steel plates, porous α-Al₂O₃ and porous stainless steel discs. The texture of the ZnO layer did not depend on the texture of the underlying support. The conversion of the ZnO to ZIF-8 via vapor-solid reaction of gaseous 2-mIm and ZnO was performed without the use of a solvent and no further activation or seeding was applied. Except the spray coated ZnO, no further zinc species were added to synthesize the ZIF-8 layers. The particle size, morphology and the degree of intergrowth were tunable by adjusting the temperature of the vapor-solid reaction in a range of 25–130 °C. The variation of the reaction time for the fabrication of membranes on α-Al₂O₃ discs at 80 °C resulted in well-intergrown layers without visible defects. The ideal gas selectivities increased with increasing temperature and the best membrane showed a H₂ permeance of 2.3·10⁻⁸ mol m⁻² s⁻¹ Pa⁻¹ at 100 °C and ideal selectivities of H₂/CO₂, H₂/N₂ and H₂/CH₄ of 5.4, 7.1 and 9.5.

ZIF-8膜是通过两步程序制造的，该程序包括（1）灵活而简单的喷涂工艺，以将均匀的ZnO层沉积在不同的载体上，以及（2）随后将ZnO层无溶剂转化为致密的ZIF-8膜通过气固反应。在喷洒的涂层提供关于支持的选择优越的灵活性，甚至产生和均匀的ZnO层与非多孔性粗钢板为5-10μm的厚度，多孔的α-Al ₂ ö ₃和多孔不锈钢圆盘。ZnO层的纹理不取决于下面的支撑物的纹理。通过气态2-mIm和ZnO的气固反应将ZnO转化为ZIF-8，无需使用溶剂，也无需进行进一步的活化或接种。除了喷涂的ZnO外，没有添加其他锌物质来合成ZIF-8层。可以通过在25–130°C的范围内调节汽固反应的温度来调节粒径，形态和共生程度。的反应时间对膜的制造变化的α-Al ₂ ö ₃圆盘在80°C的温度下会产生良好的共生层，而没有可见的缺陷。理想的气体选择性随温度的升高而增加，最佳的膜在100°C下的H ₂渗透率为2.3·10 ^-8  mol m ^-2  s ^-1 Pa ^-1，理想的选择性为H ₂ / CO ₂，H ₂ / N ₂和H ₂ / CH ₄为5.4、7.1和9.5。