叶酸衍生碳的制备及其CO_(2)捕获性能研究

Study of the Preparation of Folic Acid-Derived Carbon and its Capacity to CO_(2)Capture

温室气体CO_(2)深刻地影响着人类的生存环境,根据国家能源发展战略,高容量捕获CO_(2)主要用于缓解环境污染和生产高附加值化学品,如环状碳酸酯,因此,实现CO_(2)高容量捕获具有较好的科学价值和研究意义。本工作采用来源广泛、廉价易得的叶酸作为前驱体,以KOH为活化剂,通过碳化—活化法获得CO_(2)吸附性能优异的叶酸衍生多孔碳。首先,采用BET、SEM、SEM-EDS、XRD、Raman和XPS表征系统研究了叶酸衍生多孔碳的物性、纹理和结构特征。随后,通过1 bar 0℃和1bar 25℃的CO_(2)吸附实验评估了叶酸衍生多孔碳的CO_(2)吸附性能。最后,详细探究了叶酸衍生多孔碳的物化属性和多孔特性在CO_(2)吸附过程中所起的作用。在我国实施“碳中和、碳达峰”的背景下,本研究可为工业领域实现负碳汇目标提供技术和理论支持。

The large emissions of the greenhouse gas CO_(2)have deeply affected human survival and development.According to the national energy development strategy,the high-capacity capture of CO_(2)mainly takes up the alleviation of environmental pollution and production of high-value-added chemicals such as cyclic carbonates.In this work,the folic acid-derived activated carbon was obtained after carbonization and activation,which employed low-cost folic as precursor and KOH as activator,exhibiting excellent CO_(2)adsorption performance.We performed a series of means to understand the physical,texture and structural characteristics of the folic acid-derived activated carbon comprehensively,including BET,SEM,SEM-EDS,XRD,Raman,and XPS.Subsequently,the CO_(2)capture performance of folic acid-derived activated carbon were evaluated under 1 bar 0℃and 1 bar 25℃.Additionally,the indispensable relationship between the structural features of the activated sample and its high adsorption capacity was further explored.In the context of carbon neutrality and emission peak,it is believed that the work will provide technical and theoretical support for the achievement of negative carbon sink targets in the industrial field.