煤基质表面官能团对二氧化碳及甲烷吸附性能作用规律的研究进展
发布时间：2019-03-16 19:43
【摘要】：强化煤层气CH_4开采的深部煤层封存CO_2技术能够有效减少CO_2的排放。由于煤基质具有的吸附性能是煤体吸附CH_4及封存CO_2的主要机理,且煤基质表面官能团对于煤体CO_2和CH_4吸附能力具有潜在的影响,因此本文阐述了表面官能团对煤体CO_2和CH_4吸附性能的作用及机理,归纳了煤基质表面官能团的修饰及表征方法,指出了煤基质表面官能团对CO_2和CH_4吸附作用规律的研究趋势。分析表明:影响煤体CO_2和CH_4吸附性能的官能团主要包括含氧和含氮官能团;整体上,含氧官能团有利于CO_2吸附,含氧官能团对CH_4的吸附作用仍存在一定争议,含氮官能团均有利于提升煤体CO_2和CH_4吸附能力;官能团表征方法包括化学分析法、程序升温脱附、X射线光电子能谱、傅里叶变换红外光谱和核磁共振波谱。为了深入研究煤基质表面官能团对其吸附性能的作用规律,后续需开展以下工作:建立更为真实的煤体结构模型,提高理论模拟研究工作的预测精度;强化实验科学研究,弥补目前主要以理论模拟为研究手段的不足;优化煤体预处理方法,提高现有官能团表征方法用于煤基质官能团分析的精确度。
[Abstract]:The technology of sealing CO_2 in deep coal seam can effectively reduce the emission of CO_2 by strengthening CH_4 mining of coalbed methane. Because the adsorption performance of coal matrix is the main mechanism of adsorbing CH_4 and storing CO_2, the surface functional groups of coal matrix have a potential influence on the adsorption ability of CO_2 and CH_4 of coal body. In this paper, the effect and mechanism of surface functional groups on the adsorption properties of CO_2 and CH_4 on coal were discussed, and the modification and characterization methods of surface functional groups of coal matrix were summarized. The research trend of adsorption of CO_2 and CH_4 by functional groups on the surface of coal matrix was pointed out. The results show that the functional groups which affect the adsorption properties of CO_2 and CH_4 mainly include oxygen and nitrogen functional groups. On the whole, the oxygen-containing functional groups are beneficial to the adsorption of CO_2, and the adsorption of oxygen-containing functional groups to CH_4 is still controversial. The nitrogen-containing functional groups are beneficial to enhance the adsorption capacity of CO_2 and CH_4 in coal. The functional groups were characterized by chemical analysis, temperature programmed desorption, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. In order to further study the effect of functional groups on the adsorption properties of coal matrix, the following work should be carried out: to establish a more realistic coal structure model and to improve the prediction accuracy of theoretical simulation; Strengthen the experimental scientific research to make up for the deficiency of theoretical simulation, optimize the coal pretreatment method, improve the accuracy of the existing functional group characterization methods used in the analysis of coal matrix functional groups.
【作者单位】： 昆明理工大学化学工程学院;中煤科工集团西安研究院有限公司;太原理工大学矿业工程学院;
【基金】：国家自然科学基金(41302132) 云南省教育厅科学研究基金(2015Y063)项目
【分类号】：TE377;TQ531
，
本文编号：2441909
[Abstract]:The technology of sealing CO_2 in deep coal seam can effectively reduce the emission of CO_2 by strengthening CH_4 mining of coalbed methane. Because the adsorption performance of coal matrix is the main mechanism of adsorbing CH_4 and storing CO_2, the surface functional groups of coal matrix have a potential influence on the adsorption ability of CO_2 and CH_4 of coal body. In this paper, the effect and mechanism of surface functional groups on the adsorption properties of CO_2 and CH_4 on coal were discussed, and the modification and characterization methods of surface functional groups of coal matrix were summarized. The research trend of adsorption of CO_2 and CH_4 by functional groups on the surface of coal matrix was pointed out. The results show that the functional groups which affect the adsorption properties of CO_2 and CH_4 mainly include oxygen and nitrogen functional groups. On the whole, the oxygen-containing functional groups are beneficial to the adsorption of CO_2, and the adsorption of oxygen-containing functional groups to CH_4 is still controversial. The nitrogen-containing functional groups are beneficial to enhance the adsorption capacity of CO_2 and CH_4 in coal. The functional groups were characterized by chemical analysis, temperature programmed desorption, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. In order to further study the effect of functional groups on the adsorption properties of coal matrix, the following work should be carried out: to establish a more realistic coal structure model and to improve the prediction accuracy of theoretical simulation; Strengthen the experimental scientific research to make up for the deficiency of theoretical simulation, optimize the coal pretreatment method, improve the accuracy of the existing functional group characterization methods used in the analysis of coal matrix functional groups.
【作者单位】： 昆明理工大学化学工程学院;中煤科工集团西安研究院有限公司;太原理工大学矿业工程学院;
【基金】：国家自然科学基金(41302132) 云南省教育厅科学研究基金(2015Y063)项目
【分类号】：TE377;TQ531
，
本文编号：2441909
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