Recent advances in intermediate-temperature CO2 capture: Materials, technologies and applications

Carbon capture, utilization and storage (CCUS) is widely recognized as a vital strategy for mitigating the impact of human induced climate change. Among various CO2 adsorbents, intermediate-temperature solid adsorbents have garnered significant attention due to their potential applications in hydrogen utilization, specifically in the water gas shift, steam reforming and gasification processes. These processes are crucial for achieving carbon neutrality. While laboratory-level studies have showcased the high adsorption capacity of these materials via various synthesis and modification methods, their practical application in complex industrial environments remains challenging, impeding the commercialization process. This review aims to critically summarize the recent research progress made in intermediate-temperature (200–400 °C) solid CO2 adsorbents, particularly focusing on indicators such as cyclability, gas selectivity, and formability, which play vital roles in industrial application scenarios. Additionally, we provide an overview of laboratory-level advanced technologies specifically tailored for industrial applications. Furthermore, we highlight several industrial-ready advanced technologies that can pave the way for overcoming the challenges associated with large-scale implementation. The insights provided by this review aim to assist researchers in identifying the most relevant research directions for industrial applications. By promoting advances in the application of solid adsorbents, we strive to facilitate the ultimate goal of achieving carbon neutrality.