Experimental study on CO₂ capture mechanisms using Na₂ZrO₃ sorbents synthesized by soft chemistry method

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• 作者：Guozhao Ji^a ; Muhammad Zaki Memon^a ; Haoran Zhuo^b ; Ming Zhao^a ; ^c ; ^d ; ^{ming.zhao@tsinghua.edu.cn}
• 关键词：CO2 capture ; CO2 sorbent ; Sodium zirconate ; Sorption kinetics ; Pre-combustion ; Post-combustion
• 刊名：Chemical Engineering Journal
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：313
• 期：Complete
• 页码：646-654
• 全文大小：2188 K
• 卷排序：313

文摘

Na2C2O4-derived Na2ZrO3 sorbents by heated and freeze dryings were firstly reported. Freeze drying and resulting superior porosity did not favor CO2 sorption. CO2 diffusion and Na diffusion were two major mechanisms for CO2 sorption. Sintering inhibited CO2 diffusion but favored Na diffusion enhancing CO2 capture. 800 °C was identified as the most favorable temperature for Na2ZrO3 to capture CO2.