生物质焦反应活性及其与拉曼光谱表征关联性研究进展  

Research progress on the reactivity of biomass char and its correlation with Raman spectroscopy characterization

作　　者：包钲言 卢志民[1] 陈金铮 蔡坚锋 姚顺春[1] BAO Zhengyan;LU Zhimin;CHEN Jinzheng;CAI Jianfeng;YAO Shunchun(School of Electric Power,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学电力学院,广东广州510640

出　　处：《洁净煤技术》2024年第3期106-123,共18页Clean Coal Technology

基　　金：国家自然科学基金资助项目(52276190);广东省自然科学基金资助项目(2022A1515010741);中央高校基本科研业务费资助项目(2022ZFJH04)。

摘　　要：生物质能作为目前使用量最大的可再生能源形式,具有储量巨大、零碳排放、可再生及供应稳定等优点。生物质焦作为生物质能利用的重要形式,其反应活性因原料种类不同表现出巨大差异,严重阻碍了生物质能的进一步研究和利用。生物质焦的反应活性主要受无机元素、织构特性及碳结构的影响。拉曼光谱作为近年来发展迅猛的碳结构表征技术,已广泛应用于生物质焦的物理、化学结构特性研究。从生物质焦拉曼光谱的特征峰位置、特征峰宽、特征峰强度比和特征峰面积等光谱参数出发,综述国内外生物质焦的碳结构,并解析了生物质焦在热化学转化中碳结构的演化规律。拉曼光谱能有效表征生物质焦的碳骨架结构,高度有序的芳香或石墨化结构会降低生物质焦的反应性。目前对生物质焦反应活性与拉曼光谱参数表征的碳骨架结构之间的相关性研究仍较少,且多聚焦在单一种类生物质,其结论普适性仍需验证。也有少量关于多种生物质原料的焦反应活性和拉曼光谱表征研究,但未给出定量的结论。介绍笔者在多种生物质原料的焦反应活性与焦的拉曼光谱指标的关联性方面的研究进展,以期为生物质燃料的反应活性后续研究提供参考。展望未来,生物质焦的拉曼光谱研究发展潜力很大,目前主要研究仍基于一阶拉曼光谱区域分析,二阶拉曼光谱未受到重视;一些前沿的拉曼光谱技术,如表面增强拉曼光谱、针尖增强拉曼光谱、相干反斯托克斯拉曼散射等,也尚未引入生物质焦的碳结构表征和反应活性研究中,未来应重点考虑。Biomass energy,as the most extensively utilized source of renewable energy,has advantages such as substantial reserves,the absence of carbon emissions,renewability,and consistent supply.The usage of biomass char is a significant aspect of biomass energy utilization,and its reactivity varies greatly due to different types of raw materials,which seriously hinders the advancement of research and the utilization of biomass energy.The reactivity of biomass char is primarily influenced by inorganic components,texture properties,and carbon structure.Raman spectroscopy,as a fast-advancing technique for characterizing carbon structures,has has been widely used in the study of the physical and chemical properties of biomass char.In this paper,starting from the spectral parameters such as band position,band width,band intensity ratio,and band area of biomass coke Raman spectroscopy,the carbon structure of biomass char at home and abroad was summarized.The changes in carbon structure during the thermochemical transformation of biomass char were thoroughly analyzed.Raman spectroscopy is a reliable method for analyzing the carbon skeleton structure of biomass char.The presence of a well-organized aromatic or graphitized structure in the char will decrease its reactivity.Currently,there is a limited amount of research on the relationships between the reactivity of biomass char and the carbon skeleton structure characterized by Raman spectroscopy.These studies mostly concentrate on a specific type of biomass,and the generalizability of its findings still needs to be verified.There are also a few studies on the char reactivity and Raman spectrum of various biomass raw materials.However,no quantitative conclusions have been given.The research findings on the relationships between the char reactivity of different biomass feedstock and the Raman parameters of char were introduced,in order to offer a reference for future studies on the reactivity of biomass fuel.The future holds enormous potential for the development of Raman spectro

关 键 词：生物质能 生物质焦 反应活性 碳结构 拉曼光谱 

分 类 号：TK6[动力工程及工程热物理—生物能]