大学化学 >> 2024, Vol. 39 >> Issue (4): 149-156.doi: 10.3866/PKU.DXHX202310134

所属专题： 化学实验教学和管理(2023)

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“双碳”相关实验开发——蛋壳源CaO的制备、表征及其碳捕集性能

舒蕾, 郝正清, 闫凯, 王宏, 朱丽华, 陈芳, 王楠   

  1. 华中科技大学化学与化工学院, 武汉 430074
  • 收稿日期:2023-10-31 修回日期:2023-12-29 发布日期:2024-01-31
  • 通讯作者: 王楠 E-mail:nwang@hust.edu.cn
  • 基金资助:
    湖北高校省级教学研究项目(2022061)；华中科技大学教学研究项目(202222)

Development of a Double-Carbon Related Experiment: Preparation, Characterization and Carbon-Capture Ability of Eggshell-Derived CaO

Lei Shu, Zhengqing Hao, Kai Yan, Hong Wang, Lihua Zhu, Fang Chen, Nan Wang   

  1. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2023-10-31 Revised:2023-12-29 Published:2024-01-31

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摘要： 碳捕集技术是实现“双碳”目标的重要途径。高温工业源CO2的捕集更宜使用钙基吸收剂。本文立足“双碳”背景，将碳捕集前沿技术融入仪器分析实验课程，开发了蛋壳源CaO的制备、表征及其碳捕集性能的设计性综合实验。选择高钙废弃物鸡蛋壳为原料，采用醋酸处理得到醋酸钙，再经高温煅烧制备了具有较好碳捕集性能的CaO；利用EDTA配位滴定、扫描电子显微镜、X射线衍射、红外光谱、拉曼光谱和热重分析等多种分析手段，测试了CaO的纯度、形貌、结构及其对CO2的捕集性能。本实验采用项目式教学方式，引导学生自行设计实验方案并进行实践和总结，不仅锻炼了学生综合运用专业知识解决实际问题的能力，而且培养了学生的科研素养和团队合作精神。

关键词: 双碳, 仪器分析实验, 蛋壳, 氧化钙, 碳捕集

Abstract: The carbon capture technology is an important way for achieving the “Double Carbon” goal. Calcium-based absorbents are more suitable for the capture of CO2 from high-temperature industrial sources. Based on the context of the “Double Carbon”, this work integrated cutting-edge carbon capture technology into instrumental analysis experimental course, and developed a designing and comprehensive experiment about “preparation, characterization and carbon-capture ability of eggshell-derived CaO”. Waste eggshells was selected as the calcium source, then pre-treatment with acetic acid yielded calcium acetate, which was calcined at high temperatures to produce CaO with good carbon capture ability. The purity, morphology, structure, and CO2capture ability of as-prepared CaO were tested using various analysis methods such as EDTA compleximetry titration, scanning electron microscopy, X-ray diffraction, infrared spectroscopy, Raman spectroscopy, and thermogravimetric analysis. This experiment adopts a project-based teaching approach, which guides students to independently design experimental plans, conduct practical work, and summarize their findings. It not only enhances students’ ability to comprehensively apply professional knowledge to solve practical problems, but also cultivates their scientific research literacy and teamwork spirit.

Key words: Double carbon, Instrumental analysis experiment, Eggshell, CaO, Carbon capture