Effect of nitric acid on the pore structure and fractal characteristics of coal based on the low-temperature nitrogen adsorption method

• Published in: Powder technology Vol. 367; pp. 506 - 516
• Main Authors: Ni, Guanhua, Li, Shang, Rahman, Sheik, Xun, Meng, Wang, Hui, Xu, Yuhang, Xie, Hongchao
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.05.2020; Elsevier BV
• Subjects: acid treatment; Acids; Adsorption; Coal; Coal characteristics; Correlation; Fractal analysis; Fractal dimension; fractal dimensions; Fractal geometry; Fractals; Low temperature; Low-temperature nitrogen adsorption; Nitric acid; Nitric acid treatment; Nitrogen; Pore structure; Porosity; Scanning electron microscopy; Specific surface; Sulfur; Surface area; Surface chemistry; Nitric acid treatment; Fractal dimension; Pore structure; Coal characteristics; Low-temperature nitrogen adsorption

To study the pore structure and fractal characteristics of acid-treated coal, in this paper, the low-temperature nitrogen adsorption method, scanning electron microscopy and the fractal theory were used to analyze the coal samples. The results show that the acid treatment enlarged the wedge-shaped h...