摘要
钙基材料因吸收CO_(2)容量高、制备工艺简单和钙循环等特点,被认为是最具应用前景的高温碳捕集材料之一。将钙基固废作为或构筑钙基吸收剂不仅可节约天然资源,同时可实现工业固废的资源化利用,符合“以废治废、以废冶污”的环保理念。该文通过Huntzinger和热力学理论分析了工业中常见的6种钙基固废的理论固碳潜能,分类综述这些废渣直接碳酸化及制备衍生钙基材料的方法及存在的问题和改进方向,并总结钙基材料提升吸收能力的方法及提升机制。最后,从气体扩散、离子迁移和吸附剂结构稳定性角度出发说明钙循环的实质,提出氧空位和中空球体结构在提升吸附性能方面具有较大的潜力,指出工业钙基固废实现工业化应用面临的问题及改进方向。
Calcium-based materials have been considered as one of the most promising high-temperature carbon capture materials due to their high carbon dioxide absorption capacity,simple preparation process,and calcium cycling characteristics.Using calcium-based solid wastes as or for construction of calcium-based adsorbents not only can save natural resources,but also achieve the utilization of industrial solid wastes,which is accordant with environmental protection concepts of"treating waste with waste and treating pollution with waste".Herein,the theoretical carbon sequestration potential of six common industrial calcium-based solid wastes was analyzed through Huntzinger and thermodynamics.The methods for direct carbonization of these waste residues and the preparation of derived calcium-based adsorbents,as well as the existing problems and improvement directions,were then classified and summarized,with methods and mechanisms for improving the uptake capacity of calcium-based adsorbents described.Finally,the essence of calcium cycling was explained from the perspectives of gas diffusion,ion migration,and adsorbent'structure stability.It was pointed out that oxygen vacancies and hollow sphere structures had great potential in improving adsorption performance,and the problems and improvement directions faced by industrial calcium-based solid waste in industrial application were discussed.
作者
李方园
罗中秋
周新涛
蔡秀楠
尚波
LI Fangyuan;LUO Zhongqiu;ZHOU Xintao;CAI Xiunan;SHANG Bo(School of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan,China)
出处
《精细化工》
北大核心
2025年第5期993-1009,共17页
Fine Chemicals
基金
钒钛资源综合利用国家重点实验室开放课题(2022P4FZG03A)
云南省“兴滇英才支持计划”青年人才专项(YNWRQNBJ-2020-063)
云南省基础研究专项-面上项目(202401AT070384)
昆明理工大学分析测试基金项目(2022T20160009)。
关键词
工业钙基固废
CO_(2)
钙基材料
捕集
碳酸化机理
industrial calcium-based solid waste
carbon dioxide
calcium-based material
capture
carbonation mechanism
作者简介
李方园(1997-),男,硕士生,E-mail:2637282295@qq.com;联系人:罗中秋(1987-),女,副教授,E-mail:luozhongq@126.com;联系人:周新涛(1979-),男,教授,E-mail:zxt5188@126.com。
