面向碳达峰、碳中和的抗CO2的双相混合导体透氧膜的研究进展

Progress on CO2-tolerant Dual-phase Mixed Conductor Oxygen Transport Membranes for Carbon Peak and Carbon Neutralization

摘要:

双相混合导体透氧膜材料是一种兼具电子和氧离子导电性的无机陶瓷材料，其在高温下可以从含氧气的气源中有效地分离纯氧，且具有催化活性，因此该类混合导体透氧膜材料在高温需氧行业备受关注。其中，双相混合导体透氧膜与富氧燃烧耦合是实现“碳达峰、碳中和”目标的有效方式之一。在应用过程中，双相混合导体透氧膜材料无可避免地要与CO2接触，所以要求双相混合导体透氧膜材料要有优良的抗CO2性能。本文对近年来抗CO2的双相混合导体透氧膜材料进行了系统的综述，介绍了双相混合导体透氧膜的氧渗透机理，包括影响透氧性能和抗CO2性能的各方面因素。为了获得既有高透氧性能，又有优良抗CO2性能的双相混合导体透氧膜材料，研究者们做出了大量努力。在本文中，我们介绍了不同抗CO2双相混合导体透氧膜材料的研究进展，主要包括双相混合导体透氧膜材料在富氧燃烧、膜反应器与水分解产氢耦合、甲烷部分氧化等应用可以有效提高能源利用效率，而且有利于CO2的减排和再利用。最后，我们对抗CO2的双相混合导体透氧膜材料的发展进行了总结和展望。

Abstract:

Oxygen transport membrane (OTM) is a kind of inorganic ceramic material with both electronic and oxygen ionic conductivity at high temperature. OTM can separate oxygen from oxygen-containing gas effectively and has good catalytic activity as well. Coupling OTM with oxygen-enriched combustion is an effective way to achieve the goal of "Carbon Peak and Carbon Neutralization". However, CO2 produced by the combustion would destroy the structure of OTM and decrease the stability. So, the membranes are required to perform high oxygen permeability and CO2 tolerance. This paper presents a systematic review of recent CO2-tolerant dual-phase mixed conductor OTM materials. We introduce the oxygen permeation mechanism as well as various factors of the oxygen permeability and CO2 tolerance. A lot of efforts have been made by researchers and we present some recent progresses of CO2-tolerant OTM materials in this paper. Applications of dual-phase mixed conductor OTMs in many areas have been reported as well, such as oxygen-enriched combustion, coupling membrane reactors with hydrogen production and partial oxidation of methane. This could improve the energy utilization efficiency as well as the capture and reuse of carbon. At the end, the development of CO2-tolerant dual-phase mixed conductor OTM materials is summarized and prospected.