C-axis-oriented mordenite (MOR) zeolite membranes were fabricated and evaluated for nitrogen permeance. MOR crystals having Na⁺ as a counter-ion exhibit b-axis-orientation parallel to a magnetic field, but c-axis-orientation was achieved by exchanging the counter-ion with transition metal or rare earth ions. The oriented seed layers were prepared by dropping each MOR seed slurry on a porous substrate placed in a 10 T magnetic field. The MOR crystals with Mn²⁺, Co²⁺, Ni²⁺, Pr³⁺, Nd³⁺, and Gd³⁺ ions produced c-axis-oriented seed layers parallel to the magnetic field, while the Fe²⁺, Cu²⁺, Eu³⁺, Er³⁺, and Yb³⁺ counter-ion MOR crystals exhibited c-axis alignment perpendicular to the field. MOR crystals with Co²⁺ and Cu²⁺ counter-ions revealed orientation even in 1 T. The porous substrate with the oriented seed layer was immersed in a zeolite synthesis solution to produce a c-axis-oriented zeolite membrane via a hydrothermal treatment. C-axis-oriented membranes exhibited improved N₂ permeation, demonstrating their effectiveness.

制备了C轴取向的丝光沸石（MOR）沸石膜，并评估了氮的渗透性。具有Na ⁺作为抗衡离子的MOR晶体表现出与磁场平行的b轴取向，但是通过将抗衡离子与过渡金属或稀土离子交换而获得c轴取向。通过将每种MOR种子浆液滴入置于10 T磁场中的多孔基材上来制备定向的种子层。具有Mn 2 ⁺，Co 2 ⁺，Ni 2 ⁺，Pr ³⁺，Nd ³⁺和Gd ³⁺离子的MOR晶体产生c轴方向的籽晶层与磁场平行，而Fe 2 ⁺，Cu 2 ⁺，Eu ³⁺，Er ³⁺和Yb ³⁺反离子MOR晶体表现出垂直于磁场的c轴排列。具有Co ²⁺和Cu ²⁺抗衡离子的MOR晶体甚至在1 T中也显示出取向。将具有取向种子层的多孔基材浸入沸石合成溶液中，通过水热处理制备c轴取向的沸石膜。C轴取向膜表现出改善的N ₂渗透性，证明了其有效性。