Exploring the chemical activation effects of CsHCO3 in preparing N-doped carbonaceous CO2 adsorbents

作者：Liu, Yuewei; Cui, Hongmin; Xu, Jianguo; Shi, Jinsong^*; Wang, Wei^*; Yan, Nanfu; Zou, Jiyong; You, Shengyong

来源：Chemical Physics Letters, 2023, 826: 140655.

DOI：10.1016/j.cplett.2023.140655

• CO2 adsorption
• CsHCO3 activation
• Porous carbon
• Chemical activation
• N-doping

In the current work, highly porous carbons were prepared from CsHCO3 activation of glucosamine hydrochloride derived hydrochar. Carbon materials with surface area of 1251-2746 m2/g were obtained at high yield of 42.5-49.9%. The carbons demonstrated remarkable CO2 adsorption capabilities at both 1 and 20 bar. At 25 degrees C, an impressively high CO2 uptake of 4.64 mmol/g was achieved, and it increased to 22.12 mmol/g at 20 bar. The current work shows that CsHCO3 can be used as a highly effective activator in preparing porous carbons for CO2 adsorption.