化工进展2017，Vol.36Issue(6)：1977-1988,12.DOI:10.16085/j.issn.1000-6613.2017.06.003
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
Functional groups on coal matrix surface dependences of carbon dioxide and methane adsorption:a perspective
摘要
Abstract
CO2 sequestration in deep coal seams with enhanced coal-bed methane(CH4)recovery (CO2-ECBM)is acknowledged as a potential way. Hitherto,it is concluded that the adsorption performance of coal matrix is the main mechanism for CH4 accumulation and CO2 sequestration,and the functional groups on the coal matrix surface have potential effect on the adsorption capacity of CO2 and CH4. Therefore,the effect and mechanism of functional groups on coal matrix surface dependences of CO2and CH4 adsorption were elucidated in this work. The modified and analytical methods of the functional groups on the coal matrix surface were summarized. The research trends of functional groups on the coal matrix surface dependences of CO2and CH4 adsorption were also indicated. It is found that the oxygen-containing and nitrogen-containing functional groups are the two main functional groups influencing the adsorption performance of coals. In general,the oxygen-containing functional groups are in favor of CO2 adsorption,whereas the oxygen-containing functional groups dependence of CH4 adsorption is still controversial. The nitrogen-containing functional groups contribute to both CO2 and CH4 adsorption. Hitherto,the methods used to characterize the functional groups mainly incorporate chemical titration,temperature programmed desorption(TPD),X-ray photoelectron spectroscopy (XPS),Fourier transform infrared spectrum(FTIR)and nuclear magnetic resonance spectroscopy (NMR). In future work,the following aspects should be carried out to further explore the functional groups on the coal matrix surface dependences of CO2and CH4 adsorption. On the one hand,the more realistic coal structure model to enhance the predictive accuracy of the research work based on theory simulation should be built. On the second hand,the more experimental work is needed to make up for the deficiency of theory simulation. Finally,the pretreatment method of coal samples is optimized to improve the existing methods used to functional groups contained in coal matrix analysis.关键词
煤基质/官能团/甲烷/二氧化碳/吸附Key words
coal matrix/functional groups/methane/carbon dioxide/adsorption分类
能源科技引用本文复制引用
张锦,张登峰,霍培丽,降文萍,杨振,杨荣,李伟,贾帅秋..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[J].化工进展,2017,36(6):1977-1988,12.基金项目
国家自然科学基金(41302132)及云南省教育厅科学研究基金(2015Y063)项目. （41302132）
