Pore structure characterization of coal particles via MIP, N2 and CO2 adsorption: Effect of coalification on nanopores evolution

Pore structure characterization of coal particles via MIP, N2 and CO2 adsorption: Effect of coalification on nanopores evolution

To study the pore structure characteristics of middle-high rank coals (MHRC), five different kinds of coal samples from northern China were selected and pulverized, and the pore volume, pore size distribution, and fractal dimension were analyzed using N2/CO2 adsorption and mercury intrusion porosime...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Powder technology 2019-09, Vol.354, p.136-148
Hauptverfasser: Jiang, Jingyu, Yang, Weihua, Cheng, Yuanping, Zhao, Ke, Zheng, Shaojie
Format: Artikel
Sprache:eng
Schlagworte:
Adsorption
Anthracite
Carbon dioxide
Coal
Coal particles
Coalification jumps
Curve fitting
Fractal analysis
Fractal geometry
Fractals
Fracture dimension
Intrusion
Mercury
Mercury (metal)
Molecular structure
Particle size distribution
Pore size
Pore size distribution
Pore structure
Pores
Porosity
Size distribution
Structural analysis
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:To study the pore structure characteristics of middle-high rank coals (MHRC), five different kinds of coal samples from northern China were selected and pulverized, and the pore volume, pore size distribution, and fractal dimension were analyzed using N2/CO2 adsorption and mercury intrusion porosimetry. The results show that the nanopores size of MHRC tends to decrease with the increase of coal rank, especially the ultra-micropores dominate in semi-anthracite coal. In addition, the fractal dimensions of the adsorption pore (pores >0.5 nm and pores
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2019.05.080