煤矿安全2024，Vol.55Issue(10)：9-18,10.DOI:10.13347/j.cnki.mkaq.20230590
新疆中低阶煤微晶结构研究
Study on microcrystalline structure of medium and low rank coals in Xinjiang
摘要
Abstract
Based on X ray diffraction and Fourier transform infrared spectroscopy,the microcrystalline structure characteristics and evolution patterns of a total of 6 coal samples from the eastern Junggar,southern Junggar,Tuha,and Kubai coalfields in Xinjiang were investigated.The peak shape of 002 and 100 peaks in low-rank coal is gentle,the peak 002 becomes sharper and the"sym-metry"becomes better with the increase of coal rank,and the peak height of the peak 100 gradually increases but the peak width gradually shrinks.The height of the peak 100 gradually increases but the width gradually narrows;with the increase of coal sample metamorphism,the stacking height,elongation and quantity of aromatic laminates increase gradually,the spacing of aromatic lamin-ates decreases on the whole,and the condensation degree of aromatic structures in coal increases gradually;the peak shape of aro-matic compounds and oxygen-containing functional groups is sharp,and the peak shape of aliphatic hydrocarbons and hydroxyl functional groups is gentle,which gradually widens and slows down with the rise of coal rank;with the increase of coal rank,the aro-maticity,fat chain length,branched chain degree and maturity gradually decrease,while the polycondensation degree and hydrocar-bon(oil)generation ability gradually increase.The evolution process of coal is characterized by the shedding of oxygen-containing functional groups,the enrichment of aliphatic hydrocarbons,and the condensation of some aromatics.关键词
低阶煤/中阶煤/X射线衍射/傅里叶红外光谱/微晶结构/煤演化Key words
low rank coal/medium rank coal/X-Ray diffraction/Fourier transform infrared spectroscopy/microcrystalline struc-ture/coal evolution分类
矿业与冶金引用本文复制引用
曹玉召,杜亮,王海超,曾志伟,杨梦梦,李耀伟..新疆中低阶煤微晶结构研究[J].煤矿安全,2024,55(10):9-18,10.基金项目
国家大学生创新训练资助项目(202110755005) （202110755005）
新疆维吾尔自治区天山青年计划资助项目(2020Q065) （2020Q065）
国家自然科学基金资助项目(42262021) （42262021）
