Oxygen is industrially produced by cryogenic distillation but the process is energy-intensive. Perovskite membranes can provide an economical solution for oxygen production because of low energy input. However, the technology is not commercialized due to one of the challenges which is sealing the membrane at high temperature. Unfortunately, there is no universal sealant that can be used for all perovskite membranes. Factors such as membrane material, geometry and operating conditions can critically affect the sealant selection. This paper overviews current sealing methods for perovskite membranes for long-term oxygen separation with various membrane geometries such as disk, tubular and hollow fiber.

氧气是通过低温蒸馏在工业上生产的，但该过程耗能大。由于能量输入低，钙钛矿膜可以为氧气生产提供经济的解决方案。然而，由于挑战之一是在高温下密封膜，该技术尚未商业化。不幸的是，没有通用密封胶可用于所有钙钛矿膜。诸如膜材料，几何形状和操作条件等因素会严重影响密封剂的选择。本文概述了钙钛矿型膜的目前密封方法，该方法可用于具有多种膜几何形状（例如圆盘，管状和中空纤维）的长期氧气分离。