A review on solid adsorbents for carbon dioxide capture

Global warming is considered as one of the great challenges of the twenty-first century. CO₂ capture and storage (CCS) technology is attracting increasing interest to reduce the ever-increasing amount of CO₂ released into the atmosphere and its impact on global climate change. CO₂ capture process is a core technology, and accounts for 70-80% of the total cost of CCS technologies. CO₂ capture technologies are categorized as post-combustion, pre-combustion, and oxy-fuel combustion. Among these, post-combustion CO₂ capture processes are regarded as being important green and economic technologies. It is very important to develop new, highly efficient adsorbents to achieve techno-economic systems for post-combustion CO₂ capture. In this review, we therefore summarize dry solid adsorbents, which are divided into non-carbonaceous (e.g., zeolites, silica, metal-organic frameworks and porous polymers, alkali metal, and metal oxide carbonates) and carbonaceous materials (e.g., activated carbons, ordered porous carbons, activated carbon fibers, and graphene), with a focus on recent research.