Pore structure characterization of coal by NMR cryoporometry

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• 作者：Yixin Zhao^a ; ^b ; ^{zhaoyx@cumtb.edu.cn} ; Yingfeng Sun^b ; Shimin Liu^c ; Kai Wang^b ; Yaodong Jiang^a
• 关键词：Coal ; Pore size distribution ; NMR cryoporometry ; N2 adsorption and desorption
• 刊名：Fuel
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：190
• 期：Complete
• 页码：359-369
• 全文大小：1505 K
• 卷排序：190

文摘

NMR cryoporometry was adopted to the characterization pore size distribution in coal. NMR intensity result for the coal was calibrated to get reliable pore size distribution. NMR cryoporometry yields a higher pore volume magnitude, compared to low-temperature liquid nitrogen adsorption and desorption (LTNAD). Pore size distribution can be directly obtained by NMR cryoporometry, based on the linear relation between pore volume and signal intensity and the relationship between the melting point and pore size.