辽宁抚顺煤精官能团表征及热变异行为
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摘要
以辽宁抚顺地区产出的煤精为研究对象,通过红外光谱测量和变温实验,了解煤精官能团表征及热变异行为。结果显示:辽宁抚顺煤精红外吸收光谱和衰减全反射光谱谱峰均集中于2 900~2 800和1 600~1 200cm~(-1)两个区域;低温氧化的过程红外光谱拟合处理表征煤精的热变异行为由ν(CH_2)伸缩振动引起的吸收谱带随温度的升高呈下降趋势,而ν(C-O)伸缩振动引起的吸收谱带则随温度的上升呈上升趋势,由于受到石化过程中的氧化作用,煤精中的烷烃逐渐减少,而含氧官能团不断增加,由此推测煤精的生成环境是厌氧还原型环境。
All samples tested are extracted from West Open-pit Coal Mine of Fushun(WOPCM),Liaoning.With FTIR with reflection testing method and varied temperature,representation of functional group and thermal variation behavior of jet are analyzed.The result shows that:representation of FTIR and ATR-FTIR of Fushun jet concentrates mainly cover two areas:2 900~2 800 and 1 600~1 200cm~(-1);the absorption spectrum band of jet caused with stretching vibration ofν(CH_2)becomes lower and lower along with the temperature rise in the process of low-temperature oxidation while the absorption spectrum band caused by stretching vibration ofν(C -O) becomes higher and higher.Due to oxidation in the process of petrifaction,alkane in jet becomes less and less while the oxygen-containing functional group keeps on increasing,thus,the formation environment of jet consists anaerobic reduction environment.
All samples tested are extracted from West Open-pit Coal Mine of Fushun(WOPCM),Liaoning.With FTIR with reflection testing method and varied temperature,representation of functional group and thermal variation behavior of jet are analyzed.The result shows that:representation of FTIR and ATR-FTIR of Fushun jet concentrates mainly cover two areas:2 900~2 800 and 1 600~1 200cm~(-1);the absorption spectrum band of jet caused with stretching vibration ofν(CH_2)becomes lower and lower along with the temperature rise in the process of low-temperature oxidation while the absorption spectrum band caused by stretching vibration ofν(C -O) becomes higher and higher.Due to oxidation in the process of petrifaction,alkane in jet becomes less and less while the oxygen-containing functional group keeps on increasing,thus,the formation environment of jet consists anaerobic reduction environment.
引文
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[2]HAN De-xin(韩德馨).China Coal Petrology(中国煤岩学).Beijing:China Mining University Press(北京:中国矿业大学出版社),1996.27.
[3]XING Ying-ying,ZHU Li(邢莹莹,朱莉).Journal of Gems and Gemmology(宝石和宝石学杂志),2007,9(4):21.
[4]XING Ying-ying(邢莹莹).Superhard Material Engineering(超硬材料工程),2009,21(5):55.
[5]Bechtel A,Gratzer R,Sachsenhofer R F.International Journal of Coal Geology,2001,46:27.
[6]Watts S,Pollard A M.Journal of Archaeological Science,1999,26:923.