FTIR and Raman Spectral Research on Metamorphism and Deformation of Coal

Table 1

Part of experiment results of TDC samples.

Series of deformation	Sample ID	𝑅o,max/(%)	𝑅o,min/(%)	Δ𝑅o/𝑅o1,max	FTIR					Raman^2
					CH3CH2		C=C	CH3CH2	C–H	𝐴G	𝐴D
					2923	2826	1600	1442	749
Brittle deformation coal	LHM06	0.98	0.83	0.15	0.557	0.326	0.991	0.815	0.317	113967	55594
	HZM03	1.93	1.67	0.13	0.344	0.220	0.994	0.822	0.348	515720	286732
	SK04	1.00	0.91	0.09	0.522	0.372	0.998	0.920	0.369	115158	58378
	HZM02	1.93	1.67	0.13	0.323	0.199	0.998	0.935	0.420	—	—
	LHM12	1.37	1.13	0.18	0.579	0.383	0.998	0.933	0.385	215980	131925
	STM02	1.41	1.12	0.21	0.647	0.403	0.994	0.806	0.380	272570	153720
	TYM04	0.95	0.8	0.16	0.504	0.354	1.000	0.895	0.176	137498	64296
	SK03	0.98	0.88	0.10	0.363	0.264	0.996	0.886	0.548	174251	78056
Ductile deformation coal	LHM04	1.40	1.18	0.16	0.657	0.414	0.988	0.893	0.450	394537	202143
	LHM09	1.39	1.12	0.19	0.599	0.406	0.996	0.951	0.362	—	—
	LLM04	0.83	0.60	0.28	0.547	0.378	0.999	0.918	0.282	324725	164211
	HZM10	2.62	2.02	0.23	0.671	0.406	0.996	0.913	0.301	461139	157064
	LHM02	1.38	1.08	0.22	0.582	0.38	0.998	0.946	0.385	—	—
	LHM03	1.58	1.18	0.25	0.555	0.351	0.988	0.840	0.406	420961	229994
	STM05	1.66	1.12	0.33	0.491	0.312	0.997	0.992	0.455	511926	306591
	XTM08	1.92	1.63	0.15	0.260	0.180	1.000	0.910	0.500	499840	260745

¹Δ𝑅_o=𝑅_o,max−𝑅_o,min, ²The data of Raman was cited in [22].