光谱分析在煤结构研究中的进展  

Development and Progress of Spectral Analysis in Coal Structure Research

作　　者：李雪萍 曾强[1,2,3] LI Xue-ping;ZENG Qiang(College of Resource and Environmental Sciences,Xinjiang University,Urumqi 830046,China;Institute of Arid Ecology and Environment,Xinjiang University,Urumqi 830046,China;Key Laboratory of Oasis Ecology,Ministry of Education,Xinjiang University,Urumqi 830046,China)

机构地区：[1]新疆大学资源与环境科学学院,新疆乌鲁木齐830042 [2]新疆大学干旱生态环境研究所,新疆乌鲁木齐830046 [3]新疆大学绿洲生态教育部重点实验室,新疆乌鲁木齐830046

出　　处：《光谱学与光谱分析》2022年第2期350-357,共8页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(51974275);新疆国际合作项目(2018E01011)资助。

摘　　要：煤结构是各类煤相关研究的微观基础,光谱分析作为煤结构研究的重要方法被广泛应用,其在煤结构研究中的进展对光谱分析方法的普及、应用和发展有重要意义。光谱分析方法研究煤结构已成为煤化工领域使用的常规方法,能够快速无损检测,对煤分子结构的破坏小,可为不同环境条件下煤物理化学性质的变化提供有效的检测手段。从光谱分析在煤质、大分子结构、煤中元素三个方面介绍光谱分析方法,主要对傅里叶变换红外光谱(FTIR)、Raman光谱分析、核磁共振谱(NMR)进行综述介绍,阐明其在煤结构研究中的发展历史、应用的关键研究结果及其意义。综合国内外煤结构研究中的多种光谱分析方法及应用现状发现:目前研究并没有彻底解决煤结构特征及性质变化的问题,缺乏对煤结构光谱特征信息共性的总结,未能形成煤中官能团和元素的不同光谱信息数据库,存在光谱特征峰与煤结构信息不对等的问题,即在某波长存在特征峰但无法与煤中官能团匹配,或煤官能团受元素组成、键能等影响对多波长产生响应的问题。现阶段对原煤自然状态下结构的研究已经不能满足煤应用中产生的问题,单一的光谱分析方法不能全面分析煤结构特征,且对影响煤结构光谱特征变化因素的研究较少,尤其是煤样的前处理和煤在萃取等过程中,前处理液和萃取剂对煤光谱特征的影响。展望光谱分析在煤结构的研究中可以从以下几方面入手:光谱分析与其他方法的联用以综合描述煤结构,如化学方法、高分辨率透射电镜(HRTEM)、扫描轨道显微镜(STM)、质谱(MS)等方法的联用,定性、定量全面分析煤结构特征;多种条件下煤结构及光谱特征,现阶段应利用光谱分析方法研究煤在多种条件下的结构特征及性质变化,解决煤在实际应用中的问题。如对煤进行氧化、氢化、热解、燃烧、低温、�Coal structure is the microscopic foundation of various coal-related research,and spectral analysis is widely used as an important method of coal structure research.Its progress in coal structure research is significant to the popularization,application and development of spectral analysis methods.The study of coal structure using spectroscopic analysis methods has become a routine method used in the coal chemical industry.Spectral analysis methods can quickly and non-destructively detect the molecular structure of coal and provide effective detection methods for changes in coal physical and chemical properties under different environmental conditions.This article introduces spectroscopic analysis methods from three aspects of coal quality,macromolecular structure,and elements in coal.It mainly reviews FTIR,Raman spectroscopy,and NMR.Its development history in the study of coal structure,the key research results obtained from its application and its significance.Synthesizing the various spectroscopic analysis methods and application status in coal structure research at home and abroad,it is found that the current research has not completely solved the problem of coal structure characteristics and property changes,lacks a summary of the common characteristics of coal structure spectral characteristics,and failed to form functional groups in coal.Unlike the database of different spectral information of elements,there is a problem that the characteristic spectral peaks and coal structure information are not equal.That is,there are characteristic peaks at a certain wavelength but cannot match the functional groups in coal,or the functional groups of coal are caused by element composition,bond energy,etc.to multiple wavelengths.Respond to the question.At this stage,the research on the structure of raw coal in its natural state is no longer sufficient to meet the problems caused by coal application.A single spectrum analysis method cannot fully analyze the coal structure characteristics,and there are few studies on the

关 键 词：光谱分析 煤结构 煤质分析 元素分析 

分 类 号：O433[机械工程—光学工程]