Microporous carbonaceous adsorbents for CO2 separation via selective adsorption

Zhao, Yunfeng; Liu, Xin; Han, Yu

Microporous carbonaceous adsorbents for CO2 separation via selective adsorption

Type

Article

Authors

Zhao, Yunfeng

Liu, Xin
Han, Yu

KAUST Department

Advanced Membranes and Porous Materials Research Center
Chemical Science Program
Nanostructured Functional Materials (NFM) laboratory
Physical Science and Engineering (PSE) Division

KAUST Grant Number

URF/1/1672-01-01
FCC/1/1972-06-01

Date

2015

Abstract

Selective adsorption of CO2 has important implications for many energy and environment-related processes, which require the separation of CO2 from other gases (e.g. N2 and CH4) with high uptakes and selectivity. The development of high-performance adsorbents is one of the most promising solutions to the success of these processes. The present review is focused on the state-of-the-art of carbon-based (carbonaceous) adsorbents, covering microporous inorganic carbons and microporous organic polymers, with emphasis on the correlation between their textural and compositional properties and their CO2 adsorption/separation performance. Special attention is given to the most recently developed materials that were not covered in previous reviews. We summarize various effective strategies (N-doping, surface functionalization, extra-framework ions, molecular design, and pore size engineering) for enhancing the CO2 adsorption capacity and selectivity of carbonaceous adsorbents. Our discussion focuses on CO2/N2 separation and CO2/CH4 separation, while including an introduction to the methods and criteria used for evaluating the performance of the adsorbents. Critical issues and challenges regarding the development of high-performance adsorbents as well as some overlooked facts and misconceptions are also discussed, with the aim of providing important insights into the design of novel carbonaceous porous materials for various selective adsorption based applications. This journal is © The Royal Society of Chemistry.

Citation

Zhao, Y., Liu, X., & Han, Y. (2015). Microporous carbonaceous adsorbents for CO2separation via selective adsorption. RSC Advances, 5(38), 30310–30330. doi:10.1039/c5ra00569h

Acknowledgements

This publication is based on the research work supported by the KAUST Office of Competitive Research Funds (OCRF) under Awards no. URF/1/1672-01-01 and FCC/1/1972-06-01.