PMID- 38284043
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240129
IS  - 2470-1343 (Electronic)
IS  - 2470-1343 (Linking)
VI  - 9
IP  - 3
DP  - 2024 Jan 23
TI  - Comparative Experimental Study on the Cracking Effect of Liquid Nitrogen 
      Freeze-Thaw Cycles between Anthracite and Long-Flame Coal.
PG  - 3971-3979
LID - 10.1021/acsomega.3c08400 [doi]
AB  - In order to explore the differences in the cracking effect of freeze-thaw cycles 
      on coal of different coal grades, this study used liquid nitrogen to carry out 
      freeze-thaw cycle cracking experiments on coal samples of anthracite and 
      long-flame coal with two degrees of metamorphism. By combining a low-temperature 
      nitrogen adsorption experiment and scanning electron microscopy, the surface 
      cracks and pore structure development of water-saturated coal samples before and 
      after freeze-thaw cycles were tested. Scanning electron microscope (SEM) test 
      results show that the freeze-thaw cycle has an obvious destructive effect on the 
      coal matrix. After three freeze-thaw cycles, the anthracite coal sample is 
      obviously damaged, the coal sample is damaged, and the coal chips are peeled off. 
      The surface of a long-flame coal sample is rough, the structure is loose, and the 
      damage of the coal body is more serious by a freeze-thaw cycle. The results of 
      the low-temperature nitrogen adsorption experiment show that the freeze-thaw 
      cycle can effectively promote the development of the pore structure of the coal 
      body. After three freeze-thaw cycles, the specific surface area growth rates of 
      anthracite and long-flame coal samples are 69.57 and 49.13%, respectively. The 
      pore volume growth rates were 73.01 and 35.54%, respectively. The increment of 
      specific surface area and pore volume of the anthracite coal sample is lower than 
      that of the long-flame coal sample, but the growth rate of specific surface area 
      and pore volume of the anthracite coal sample is higher than that of the 
      long-flame coal sample.
CI  - (c) 2024 The Authors. Published by American Chemical Society.
FAU - Yuan, Junwei
AU  - Yuan J
AD  - School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 
      454003, China.
AD  - Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency 
      Utilization, Jiaozuo 454003, China.
AD  - MOE Engineering Research Center of Coal Mine Disaster Prevention and Emergency 
      Rescue, Jiaozuo 454000, China.
FAU - Chen, Min
AU  - Chen M
AUID- ORCID: 0000-0002-7525-2769
AD  - School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 
      454003, China.
FAU - Wang, Yao
AU  - Wang Y
AUID- ORCID: 0000-0001-7247-4019
AD  - School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 
      454003, China.
FAU - Chen, Jianxun
AU  - Chen J
AUID- ORCID: 0000-0002-8189-6720
AD  - School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 
      454003, China.
LA  - eng
PT  - Journal Article
DEP - 20240111
PL  - United States
TA  - ACS Omega
JT  - ACS omega
JID - 101691658
PMC - PMC10809281
COIS- The authors declare no competing financial interest.
EDAT- 2024/01/29 06:44
MHDA- 2024/01/29 06:45
PMCR- 2024/01/11
CRDT- 2024/01/29 04:51
PHST- 2023/10/24 00:00 [received]
PHST- 2023/12/20 00:00 [revised]
PHST- 2023/12/26 00:00 [accepted]
PHST- 2024/01/29 06:45 [medline]
PHST- 2024/01/29 06:44 [pubmed]
PHST- 2024/01/29 04:51 [entrez]
PHST- 2024/01/11 00:00 [pmc-release]
AID - 10.1021/acsomega.3c08400 [doi]
PST - epublish
SO  - ACS Omega. 2024 Jan 11;9(3):3971-3979. doi: 10.1021/acsomega.3c08400. eCollection 
      2024 Jan 23.