Experimental study of influence of natural organic solvent limonene on methane adsorption–desorption behaviors of selected rank coals

Xiaomin Liang, Tianhe Kang, Jianting Kang, Xiaoyu Zhang, Liankun Zhang, Haoyang Li, Wenqing Zhu, Junqing Guo and Bin Zhang

Energy, 2024, vol. 291, issue C

Abstract: For the clean and efficient extraction of coalbed methane (CBM), it is of great significance to understand the mechanism of the interaction between limonene, which is a natural organic solvent, and coal. In this study, the surface groups, nanoscale pore characteristics, and methane (CH4) adsorption–desorption behaviors of selected rank coals were compared and analyzed to explore the effect of limonene leaching-induced evolution of the macromolecular structure of coal on its adsorption–desorption behaviors. The results showed that with the increase in the mass fraction of limonene, the contents of the aliphatic, aromatic hydrocarbons, and the cross-linking degree of the macromolecular structure of the coal decreased. This led to pore volume expansion of the SH and SQ coals, from a range of 0.3–7 nm to 7–36 nm. The pore volume in the 1.5–7 nm range in the LD coal increased significantly under the combined influence of the pore-expanding effect of the 0.3–1.5 nm pores and the porosity-enhancing effect of the 7–36 nm pores. Therefore, the promotion effect of limonene modification on the CH4 adsorption-desorption behaviors of the coal was more evident in the medium- and high-rank coals than in the low rank-coals.

Keywords: Limonene; Adsorption–desorption behaviors; Surface groups; Nanoscale pores; Different rank coals (search for similar items in EconPapers)
Date: 2024
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544224002627
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:291:y:2024:i:c:s0360544224002627

DOI: 10.1016/j.energy.2024.130491

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().