Abstract Oxy-fuel combustion has received significant attention because it is widely considered to be a promising method for cost-effective CO2 capture. The key to the success of oxy-fuel combustion processes is the availability of inexpensive O2. Therefore, development of low-cost and robust technologies for air separation or separating O2 from air is critical. Great progress has been made in this research and development area. However, a recent review of the progress made in the area is lacking. This review is designed to fill the gap. The review focuses on three major technologies for separating oxygen from air, including membranes, adsorption, and chemical-looping with oxygen uncoupling. The separation principles, characteristics, challenges and the associated solutions of these major technologies are systematically discussed. Future opportunities are outlined for each.

中文翻译：

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用于氧燃料燃烧的 O 2 分离的进展——一种具有成本效益的 CO 2 捕获的有前途的方法：综述

摘要 富氧燃烧已受到广泛关注，因为它被广泛认为是一种具有成本效益的 CO2 捕集方法。氧燃料燃烧过程成功的关键是廉价 O2 的可用性。因此，开发用于空气分离或从空气中分离 O2 的低成本且稳健的技术至关重要。该研究和开发领域取得了很大进展。然而，最近缺乏对该领域取得的进展的审查。本次审查旨在填补这一空白。该评论侧重于从空气中分离氧气的三种主要技术，包括膜、吸附和带有氧气解偶联的化学循环。系统地讨论了这些主要技术的分离原理、特点、挑战和相关解决方案。