Micro-Raman spectroscopy of carbonized semifusinite and fusinite
Micro-Raman spectroscopy of carbonized semifusinite and fusinite
复制标题
DOI：
10.1016/j.coal.2011.06.016
复制
发表时间：
2011-09
影响因子：
5.6
通讯作者：
R. Morga
中科院分区：
文献类型：
--
作者：
R. Morga
本研究的目的是展示显微拉曼光谱在检查煤显微组分中的应用，并表征在氩气氛中加热至 400–1200°C 的半熔岩和熔熔岩的内部结构。对来自波兰上西里西亚煤盆地的三个蒸汽和焦化烟煤样品（Rr=0.98-1.42%）制备的惰性精矿进行了检查。从拉曼衍生参数推断，熔熔岩和半熔熔岩以及后者显微组分的反应性和非反应性形式在结构性质方面有所不同。两种显微物质在热处理下的行为由它们的结构和化学性质决定。碳化导致半熔岩和熔熔岩大分子网络的重建，导致聚芳烃单元的生长，并且对于前显微组分，结构组织也增加。随后反射率显着增加。在 1200°C 下碳化的半熔熔岩具有更大的相干域，并且比熔熔岩更有序，从而导致更高的反射率值。 AD3+D4/AALL比率可用作惰性反应性的量度。研究发现，半熔岩和熔熔岩的随机反射率 (Rr) 与 ID1/IG 比率以及所研究温度范围内大多数拉曼谱带（G、D1、D2 和 D3）的位置之间存在显着关系。
The purpose of the study was to present application of micro-Raman spectroscopy for examination of coal macerals and to characterize the internal structure of semifusinite and fusinite heated at 400–1200°C, in an argon atmosphere. Examination was performed on inertinite concentrates prepared from three samples of steam and coking bituminous coals (Rr=0.98–1.42%) from the Upper Silesian Coal Basin of Poland. Fusinite and semifusinite, as well as reactive and non-reactive forms of the latter maceral differ in terms of structural properties, as inferred from the Raman-derived parameters. Behavior of both macerals under heat-treatment is determined by their structural and chemical properties. Carbonization causes rebuilding of macromolecular network of semifusinite and fusinite resulting in the growth of polyaromatic units and, in case of the former maceral, also increases in structural organization. This is followed by significant reflectance increase. Semifusinite carbonized at 1200°C has larger coherent domains and they are more ordered than in fusinite, which results in higher reflectance value. The AD3+D4/AALLratio may be used as a measure of inertinite reactivity. Significant relationships between random reflectance (Rr) of semifusinite and fusinite and the ID1/IGratio and position of most Raman bands (G, D1, D2 and D3) for the studied temperature range were found.