The gas permeability of Y_0.03Zr_0.97O₂ (3Y-TZP) porous supports from thermoplastic feedstocks has been improved by adding MgO as a non-pyrolyzable pore former. Common pyrolyzable pore formers such as graphite often produce tortuous and narrow pore channels with low gas permeability, limiting the performance of oxygen transport membranes or other membranes relying on gas transport to the active membrane surface. Thermoplastic feedstocks for extrusion of tubular 3Y-TZP supports were prepared with four different amounts of pyrolyzable pore formers and/or MgO as non-pyrolyzable pore former. The MgO was removed after sintering by leaching in acetic acid. With this technique we obtained porosities above 70 vol% and gas permeabilities above 3∙10⁻¹⁴ m². Compared to samples with only pyrolyzable pore formers, the non-pyrolyzable pore former increases the gas permeability and reduces the tortuosity.

通过添加MgO作为不可热解的成孔剂，可改善热塑性原料Y _0.03 Zr _0.97 O ₂（3Y-TZP）多孔载体的透气性。常见的可热解造孔剂（例如石墨）通常会产生曲折且狭窄的孔道，且气体渗透率较低，从而限制了氧气传输膜或其他依赖于将气体传输至活性膜表面的膜的性能。用四种不同量的可热解孔形成剂和/或MgO作为不可热解孔形成剂制备用于挤出管状3Y-TZP载体的热塑性原料。氧化镁被去除后通过在乙酸中浸出进行烧结。通过这种技术，我们获得了高于70 vol％的孔隙率和高于3∙10 ^-14  m ^2的气体渗透率。与仅具有可热解成孔剂的样品相比，不可热解成孔剂增加了气体渗透性并降低了曲折度。