哈尔乌素矿区6号煤FTIR特征
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摘要
采用傅里叶变换红外光谱仪对采自哈尔乌素矿区6号煤层中的4个样品进行了红外光谱(FTIR)分析。通过对红外光谱曲线的分峰拟合,可以得到样品中官能团种类与含量的信息。结果表明:哈尔乌素矿区6号煤中苯环二取代是芳香烃的主要结构;亚甲基、甲基、次甲基含量依次降低,煤中烷基侧链较多,支链化程度高;羟基的主要存在形式是自缔合羟基氢键;在醚氧、羰基和羧基三种含氧官能团中,醚氧的含量最高。通过对样品红外结构参数和最大镜质体反射率之间相关性的探讨,发现红外结构参数的变化与煤化作用过程第一次跃变的发生存在密切关系。
Four coal samples from No.6 coal seam in Haerwusu mine were analyzed using fourier transform infrared spectroscopy(FTIR).Information about the type and content of functional groups in the samples were obtained after curve-fitting analysis.The results showed that benzene ring-disubstituted was the primary structure of aromatic hydrocarbon;contents of methylene,methyl and methenyl decreased successively,and it indicated that the coal contained a great number of alkyl side-chains,and the degree of branching chain was high;the main existing form of hydroxide radical was self-associated hydroxyl bond;the content of ether group was the highest among the three oxygen-containing functional groups,namely carbonyl,carboxyl,and ether groups.Meanwhile,the results showed that the change of structure parameters obtained from the FTIR has the close relationship with the first coalification jump through the study of correlation between the max reflectance of vitrinite(Romax)and the structure parameters obtained from the FTIR.
Four coal samples from No.6 coal seam in Haerwusu mine were analyzed using fourier transform infrared spectroscopy(FTIR).Information about the type and content of functional groups in the samples were obtained after curve-fitting analysis.The results showed that benzene ring-disubstituted was the primary structure of aromatic hydrocarbon;contents of methylene,methyl and methenyl decreased successively,and it indicated that the coal contained a great number of alkyl side-chains,and the degree of branching chain was high;the main existing form of hydroxide radical was self-associated hydroxyl bond;the content of ether group was the highest among the three oxygen-containing functional groups,namely carbonyl,carboxyl,and ether groups.Meanwhile,the results showed that the change of structure parameters obtained from the FTIR has the close relationship with the first coalification jump through the study of correlation between the max reflectance of vitrinite(Romax)and the structure parameters obtained from the FTIR.
引文
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[15]郑庆荣,曾凡桂,张世同.中变质煤结构演化的FT-IR分析[J].煤炭学报,2011,36(3):481-486.
[16]张卫,曾凡桂.中等变质程度煤中羟基的红外光谱分析[J].太原理工大学学报,2005,36(5):545-548.
[17]李霞,曾凡桂,王威,等.低中煤级煤结构演化的FTIR表征[J].煤炭学报,2015,40(12):2900-2908.
[18]宋昱,朱炎铭,李伍.东胜长焰煤热解含氧官能团结构演化的13C-NMR和FT-IR分析[J].燃料化学学报,2015,43(5):519-529.
[19]刘爱兄,岳之峰.哈尔乌素露天煤矿矿区煤质特征分析[J].露天采矿技术,2012(5):40-41,44.
[20]SOLOMON P,CARANGELO R.FTIR analysis of coal.1.techniques and determination of hydroxyl concentrations[J].Fuel,1982,61(7):663-669.
[21]韩德馨.中国煤岩学[M].徐州:中国矿业大学出版社,1996:217-219.
[22]陈茺,许学敏,高晋生,等.煤中氢键类型的研究[J].燃料化学学报,1998,26(2):140-144.
[23]石松林,内蒙古准格尔煤田晚古生代煤系富铝矿物特征及成因[D].北京:中国矿业大学(北京),2014.
[24]韩峰,张衍国,蒙爱红,等.云南褐煤结构的FTIR分析[J].煤炭学报,2014,39(11):2293-2299.
[25]石开仪,陶秀祥,李志,等.利用红外光谱构建抚顺煤大分子结构模型[J].高分子通报,2013(3):61-66.
[26]HE Xueqiu,LIU Xianfeng,NIE Baisheng,et al.FTIR and Raman spectroscopy characterization of functional groups in various rank coals[J].Fuel,2017,206(10):555-563.
[2]MARZEC A.Towards an understanding of the coal structure:A review[J].Fuel Processing Technology,2002,77(25):25-32.
[3]曾凡桂,谢克昌.煤结构化学的理论体系与方法论[J].煤炭学报,2004,29(4):443-447.
[4]SOBKOWIAK M,REISSER E,GIVEN P,et al.Determination of aromatic and aliphatic CH groups in coal by FT-IR:1.Studies of coal extracts[J].Fuel,1984,63(9):1245-1252.
[5]SOBKOWIAK M,PAINTER P.A Comparison of DRIFT and KBr Pellet Methodologies for the Quantitative Analysis of Functional Groups in Coal by Infrared Spectroscopy[J].Energy&Fuels,1995,9(2):359-363.
[6]PAINTER P,SOBKOWIAK M,YOUTCHEFF J.FT-i.r.study of hydrogen bonding in coal[J].Fuel,1987,66(7):973-978.
[7]IGLESIAS M,JIM6)ENEZ A,LAGGOUN-D6)EFARGE F,et al.FTIR Study of Pure Vitrains and Associated Coals[J].Energy&Fuels,1995,9(3):458-466.
[8]IBARRA J,MOLINER R,BONET A.FT-i.r.investigation on char formation during the early stages of coal pyrolysis[J].Fuel,1994,73(6):918-924.
[9]IBARRA J,MUOZ E,MOLINER R.FTIR study of the evolution of coal structure during the coalification process[J].Organic Geochemistry,1996,24(6):725-735.
[10]IBARRA J,MIRANDA J.Detection of weathering in stockpiled coals by Fourier transform infrared spectroscopy[J].Vibrational Spectroscopy,1996,10(2):311-318.
[11]陈儒庆,曹长春,阮贵华.广西煤的红外光谱特征[J].桂林理工大学学报,1997,17(4):349-358.
[12]朱学栋,朱子彬,韩冲家,等.煤中含氧官能团的红外光谱定量分析[J].燃料化学学报,1999,27(4):335-339.
[13]朱学栋,朱子彬.红外光谱定量分析煤中脂肪碳和芳香碳[J].曲阜师范大学学报:自然科学版,2001,27(4):64-67.
[14]冯杰,李文英,谢克昌.傅立叶红外光谱法对煤结构的研究[J].中国矿业大学学报,2002,31(5):362-366.
[15]郑庆荣,曾凡桂,张世同.中变质煤结构演化的FT-IR分析[J].煤炭学报,2011,36(3):481-486.
[16]张卫,曾凡桂.中等变质程度煤中羟基的红外光谱分析[J].太原理工大学学报,2005,36(5):545-548.
[17]李霞,曾凡桂,王威,等.低中煤级煤结构演化的FTIR表征[J].煤炭学报,2015,40(12):2900-2908.
[18]宋昱,朱炎铭,李伍.东胜长焰煤热解含氧官能团结构演化的13C-NMR和FT-IR分析[J].燃料化学学报,2015,43(5):519-529.
[19]刘爱兄,岳之峰.哈尔乌素露天煤矿矿区煤质特征分析[J].露天采矿技术,2012(5):40-41,44.
[20]SOLOMON P,CARANGELO R.FTIR analysis of coal.1.techniques and determination of hydroxyl concentrations[J].Fuel,1982,61(7):663-669.
[21]韩德馨.中国煤岩学[M].徐州:中国矿业大学出版社,1996:217-219.
[22]陈茺,许学敏,高晋生,等.煤中氢键类型的研究[J].燃料化学学报,1998,26(2):140-144.
[23]石松林,内蒙古准格尔煤田晚古生代煤系富铝矿物特征及成因[D].北京:中国矿业大学(北京),2014.
[24]韩峰,张衍国,蒙爱红,等.云南褐煤结构的FTIR分析[J].煤炭学报,2014,39(11):2293-2299.
[25]石开仪,陶秀祥,李志,等.利用红外光谱构建抚顺煤大分子结构模型[J].高分子通报,2013(3):61-66.
[26]HE Xueqiu,LIU Xianfeng,NIE Baisheng,et al.FTIR and Raman spectroscopy characterization of functional groups in various rank coals[J].Fuel,2017,206(10):555-563.
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