4.7 Article

CO2 capture by Li4SiO4 Sorbents: From fundamentals to applications

期刊

出版社

ELSEVIER
DOI: 10.1016/j.seppur.2022.121977

关键词

CO2 capture; High-temperatureCO2 sorbent; Adsorption thermodynamics kinetics and mechanisms; EffectiveLi4SiO4 sorbents; Application potential

资金

  1. National Natural Science Foundation of China
  2. Natural Science Foun-dation of Chongqing
  3. Open Fund Project of State Key Laboratory of Clean Energy Utilization
  4. Venture and Innovation Support Program for Chongqing Overseas Returnees
  5. [52076020]
  6. [cstc2021jcyj-msxmX0287]
  7. [ZJU-CEU2021006]
  8. [cx2021108]

向作者/读者索取更多资源

This review critically discusses the state-of-the-art researches on the CO2 capture by Li4SiO4, focusing on thermodynamic equilibrium, reaction mechanisms, kinetics, sorbent modifications, and potential applications. It emphasizes the difference between theoretical and practical CO2 adsorption/desorption equilibrium, discusses the distribution features and mechanisms, analyzes kinetic models and recent advances in high-efficient Li4SiO4-based sorbents.
Carbon capture, utilization and storage (CCUS) is widely acknowledged as an essential route to mitigate CO2 emissions into atmosphere. Li4SiO4 as a sort of high-temperature CO2 sorbent has great potentials in CCUS ap-plications, as well as being integrated with other high value-added processes like the integrated CO2 capture and utilization (ICCU). This review critically discusses the state-of-the-art researches on the CO2 capture by Li4SiO4 from the fundamental aspects of thermodynamic equilibrium, reaction mechanisms and kinetics, sorbent mod-ifications, to potential applications. Difference between theoretical and practical CO2 adsorption/desorption equilibrium is emphasized, product layer distribution features and adsorption/desorption mechanisms are dis-cussed, typical kinetic models and their applications in CO2 adsorption and desorption by Li4SiO4 are analyzed, and recent advances in high-efficient Li4SiO4-based sorbents are summarized. We hope this review can stimulate future studies on understanding the basic features and mechanism of CO2 capture process, developing low-cost and scalable sorbent manufacturing method, and establishing more integrated and effective systems for the high -value disposal of CO2.

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