粉煤灰基硅铝酸盐材料的合成及其捕集CO_(2)的研究进展  

Research progress in preparation of fly ash based aluminosilicate materials and their CO_(2) capture

作　　者：庞薇 秦身钧 郝龙龙[2] 门长全 侯佳佳 李神勇 PANG Wei;QIN Shenjun;HAO Longlong;MEN Changquan;HOU Jiajia;LI Shenyong(College of Material Science and Engineering,Hebei University of Engineering,Handan 056038,Hebei,China;Key Laboratory of Resource Exploration Research of Hebei Province,Hebei University of Engineering,Handan 056038,Hebei,China)

机构地区：[1]河北工程大学材料科学与工程学院,河北邯郸056038 [2]河北工程大学河北省资源勘测研究重点实验室,河北邯郸056038

出　　处：《低碳化学与化工》2024年第7期42-54,共13页Low-Carbon Chemistry and Chemical Engineering

基　　金：国家自然科学基金(42172191);河北自然科学基金(D2021402013,E2020402075)。

摘　　要：CO_(2)大量排放导致全球变暖加剧,碳捕集可减缓CO_(2)排放对气候变化的影响,但吸附剂高昂的成本阻碍了碳捕集技术的发展。同时煤炭燃烧量持续增加使粉煤灰产量不断增加,而粉煤灰的高值化利用率较低。将粉煤灰用于合成粉煤灰基硅铝酸盐材料,并应用于碳捕集技术可实现工业固体废物的高值化利用和碳减排的双重目标。介绍了粉煤灰合成硅铝酸盐材料前的预处理步骤,系统讨论了粉煤灰基沸石、Li_(4)SiO_(4)吸附剂和SiO_(2)介孔材料的合成和其捕集CO_(2)的研究,然后对粉煤灰基硅铝酸盐材料吸附CO_(2)的动力学进行了总结。粉煤灰基硅铝酸盐材料制备前的物理和化学预处理步骤可优化材料的孔隙结构及表面化学性质,胺功能化或金属离子掺杂等方式可实现对材料结构和CO_(2)吸附性能的调控。粉煤灰基硅铝酸盐材料的CO_(2)吸附动力学拟合因产物及吸附条件不同而存在差异。深入理论研究,推动规模化工程应用,对促进碳捕集技术发展具有重要的指导意义。The escalating emissions of CO_(2) exacerbate global warming.Carbon capture offers a potential avenue to attenuate CO_(2) emissions,but the high cost of adsorbents acts as a barrier to the development of carbon capture technologies.Simultaneously,the continual increase in coal combustion leads to a rise in fly ash production,yet its valorization remains relatively low.Utilizing fly ash for synthesizing fly ash-based aluminosilicate materials and their application in carbon capture technologies present a dual solution by valorizing industrial solid waste and reducing carbon emissions.The preprocessing steps prior to synthesizing fly ash-based aluminosilicate materials were outlined and the research on synthesis of fly ash-based zeolites,Li_(4)SiO_(4) adsorbents,and SiO_(2) mesoporous materials and their synthesis were systematically discussed,and the kinetics of CO_(2) adsorption on fly ash-based aluminosilicate materials were summarized.Physical and chemical preprocessing steps before preparing fly ash-based aluminosilicate materials optimize the materials’pore structure and surface chemical properties.Strategies such as amine functionalization or metal ion doping enable control over the material structure and CO_(2) capture performance.Discrepancies in the kinetics of CO_(2) capture on fly ash-based aluminosilicate materials arise from variations in reaction products and capture conditions.In-depth theoretical research and promoting large-scale engineering applications hold significant promise in guiding the development of carbon capture technologies.

关 键 词：粉煤灰 CO_(2)捕集 硅铝酸盐材料 吸附动力学 

分 类 号：TQ536.4[化学工程—煤化学工程]