化工学报2025，Vol.76Issue(11)：6086-6098,13.DOI:10.11949/0438-1157.20250285
盐模板法制备多孔碳酸钙及其CO2吸附特性研究
Preparation of porous calcium carbonate by salt template method and its CO2 adsorption characteristics
摘要
Abstract
CO2 as one of the greenhouse gases has a significant impact on global climate change.It is crucial to develop efficient and economical CO2 capture technologies.One potential approach is the adsorption of CO2 using CaCO3 due to its wide availability,low cost and the ability to optimize the adsorption properties by modulating the morphology and specific surface area.In this study,CaCO3 materials were prepared using KCl,NaCl and LiCl as salt templates,and the CO2 adsorption properties were systematically evaluated.The results showed that the specific surface area of CaCO3-KCl was significantly higher than that of CaCO3-NaCl and CaCO3-LiCl,which were 72.6,40.2 and 18.9 m2/g,respectively.The CaCO3-KCl showed a porous nanosheet structure.The CO2-TPD showed that the surface of CaCO3-KCl possessed more adsorption sites.Importantly,the CO2 adsorption amounts of CaCO3-KCl,CaCO3-NaCl and CaCO3-LiCl were 0.39,0.32 and 0.31 mmol/g,respectively.The CO2 adsorption amount of CaCO3-KCl only decreased by 7％in 10 breakthrough-cycling experiments and had a better separation effect on CO2/N2.The separation effect improved from 3.4 to 44.8.This study reveals the effects of salt templating agent on the morphology,specific surface area and CO2 adsorption performance of CaCO3,which provides an important reference for the design of efficient CO2 adsorption materials.关键词
盐模板剂/机械球磨法/多孔结构/碳酸钙/吸附剂/二氧化碳吸附Key words
salt templating agent/mechanical ball milling method/porous structure/CaCO3/sorbents/carbon dioxide adsorption分类
化学化工引用本文复制引用
石美玉,赵波琛,束远,牛强,张鹏飞..盐模板法制备多孔碳酸钙及其CO2吸附特性研究[J].化工学报,2025,76(11):6086-6098,13.基金项目
内蒙古自治区重点研发计划(2021ZD0042,2021EEDSCXSFQZD006,2021GG0350) （2021ZD0042,2021EEDSCXSFQZD006,2021GG0350）
鄂尔多斯市重点研发计划项目(2121HZ231-8) （2121HZ231-8）
