Activated carbon produced from paulownia sawdust for high-performance CO_2 sorbents

• 作 者: Xiao-Li Zhu Pei-Yu Wang Chao Peng Juan Yang Xing-Bin Yan
• 机 构: Laboratory of Clean Energy Chemistry and Materials,Lanzhou Institute of Chemical Physics,Chinese Aca
• 出 处: Chinese Chemical Letters
• 发表日期: 2014年06期
• 关键词: capture biomass uptake carbons consequence isotherms adsorbed isotherm sorption

In this paper,activated carbons(ACs) with high specific surface areas were successfully synthesized by simple one-step carbonization-activation from paulownia sawdust biomass,and the effects of the synthetic conditions on their CO_2 capture capacity were investigated as well.The results show that,when the mass ratio between activator and biomass is 4,the activation temperature is 700℃ and the activation time is 1 h,as-made AC provides the most micropores for CO_2 adsorption.As a consequence,the maximum CO_2 uptake of 8.0 mmol/g is obtained at 0℃ and 1 bar.

In this paper, activated carbons (ACs) with high specific surface areas were successfully synthesized by simple one-step carbonization-activation from paulownia sawdust biomass, and the effects of the synthetic conditions on their CO 2 capture capacity were investigated as well. The results show that when the mass ratio between activator and biomass is 4, the activation temperature is 700 ° C. and the activation time is 1 h, as-made AC provides the microphotones for CO 2 adsorption. As a consequence, the maximum CO 2 uptake of 8.0 mmol / g is obtained at 0 ° C and 1 bar.