PMID- 32656863
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20200921
LR  - 20200921
IS  - 1097-0231 (Electronic)
IS  - 0951-4198 (Linking)
VI  - 34
IP  - 20
DP  - 2020 Oct 30
TI  - Sequential thermal dissolution of two low-rank coals and characterization of 
      their structures by high-performance liquid chromatography/time-of-flight mass 
      spectrometry and gas chromatography/mass spectrometry.
PG  - e8887
LID - 10.1002/rcm.8887 [doi]
AB  - RATIONALE: Gas chromatography/mass spectrometry (GC/MS) and high-performance 
      liquid chromatography/time-of-flight mass spectrometry (HPLC/TOF-MS) were used to 
      separate and reveal the molecular characteristics of organic matter in low-rank 
      coals. METHODS: Six soluble portions (SPs) were obtained by sequential thermal 
      dissolution (TD) of two low-rank coals in the order of cyclohexane, acetone and 
      methanol solvents at 300 degrees C. Organic matter with different molecular 
      characteristics were enriched in eachTD extract, which was further separated and 
      analyzed by GC/MS and HPLC/TOF-MS using an electrospray ionization source in 
      positive mode to obtain a comprehensive understanding of the structural 
      composition of coals. RESULTS: Low polarity compounds like alkanes and arenes 
      have a better solubility in cyclohexane. Phorone has the highest relative 
      abundance in the acetone SPs, and the main compounds detected in the methanol SPs 
      are alcohols and phenols. According to the data from HPLC/TOF-MS, most of the 
      oxygen atoms are in the form of carbonyl and alkoxy groups. The 
      nitrogen-containing compounds in SPs are mainly saturated aliphatic amines and 
      pyridines. The sulfur-containing compounds mainly exist in the form of 
      thioalkanes and thiophenes. CONCLUSIONS: Non-destructive methods were used to 
      obtain soluble matter from coals, and different chromatographic and mass 
      spectrometric techniques were used to separate and analyze the organic matter in 
      coals. Detailed molecular structural information was obtained for the efficient 
      and clean utilization of low-rank coals.
CI  - (c) 2020 John Wiley & Sons, Ltd.
FAU - Cao, Xiao-Hui
AU  - Cao XH
AD  - Key Laboratory of Coal Processing and Efficient Utilization, Ministry of 
      Education, China University of Mining & Technology, Xuzhou, Jiangsu, 221116, 
      China.
FAU - Fan, Xing
AU  - Fan X
AUID- ORCID: 0000-0001-5530-5563
AD  - Key Laboratory of Coal Processing and Efficient Utilization, Ministry of 
      Education, China University of Mining & Technology, Xuzhou, Jiangsu, 221116, 
      China.
AD  - College of Chemical and Biological Engineering, Shandong University of Science 
      and Technology, Qingdao, Shandong, 266590, China.
AD  - Key Laboratory of Coal Cleaning Conversion and Chemical Engineering Process, 
      Xinjiang Uyghur Autonomous Region, Xinjiang University, Urumqi, Xinjiang, 830046, 
      China.
FAU - Xia, Jun-Liu
AU  - Xia JL
AD  - Key Laboratory of Coal Processing and Efficient Utilization, Ministry of 
      Education, China University of Mining & Technology, Xuzhou, Jiangsu, 221116, 
      China.
FAU - Mo, Wen-Long
AU  - Mo WL
AD  - Key Laboratory of Coal Cleaning Conversion and Chemical Engineering Process, 
      Xinjiang Uyghur Autonomous Region, Xinjiang University, Urumqi, Xinjiang, 830046, 
      China.
FAU - Nulahong, Aisha
AU  - Nulahong A
AD  - Key Laboratory of Coal Cleaning Conversion and Chemical Engineering Process, 
      Xinjiang Uyghur Autonomous Region, Xinjiang University, Urumqi, Xinjiang, 830046, 
      China.
FAU - Zhao, Yun-Peng
AU  - Zhao YP
AD  - Key Laboratory of Coal Processing and Efficient Utilization, Ministry of 
      Education, China University of Mining & Technology, Xuzhou, Jiangsu, 221116, 
      China.
FAU - Zhao, Wei
AU  - Zhao W
AD  - Key Laboratory of Coal Processing and Efficient Utilization, Ministry of 
      Education, China University of Mining & Technology, Xuzhou, Jiangsu, 221116, 
      China.
FAU - Ma, Feng-Yun
AU  - Ma FY
AD  - Key Laboratory of Coal Cleaning Conversion and Chemical Engineering Process, 
      Xinjiang Uyghur Autonomous Region, Xinjiang University, Urumqi, Xinjiang, 830046, 
      China.
FAU - Wei, Xian-Yong
AU  - Wei XY
AUID- ORCID: 0000-0001-7106-4624
AD  - Key Laboratory of Coal Processing and Efficient Utilization, Ministry of 
      Education, China University of Mining & Technology, Xuzhou, Jiangsu, 221116, 
      China.
AD  - Key Laboratory of Coal Cleaning Conversion and Chemical Engineering Process, 
      Xinjiang Uyghur Autonomous Region, Xinjiang University, Urumqi, Xinjiang, 830046, 
      China.
LA  - eng
GR  - 2017XKZD10/Fundamental Research Funds for the Central Universities/
PT  - Journal Article
PL  - England
TA  - Rapid Commun Mass Spectrom
JT  - Rapid communications in mass spectrometry : RCM
JID - 8802365
SB  - IM
EDAT- 2020/07/14 06:00
MHDA- 2020/07/14 06:01
CRDT- 2020/07/14 06:00
PHST- 2020/05/05 00:00 [received]
PHST- 2020/07/02 00:00 [revised]
PHST- 2020/07/03 00:00 [accepted]
PHST- 2020/07/14 06:00 [pubmed]
PHST- 2020/07/14 06:01 [medline]
PHST- 2020/07/14 06:00 [entrez]
AID - 10.1002/rcm.8887 [doi]
PST - ppublish
SO  - Rapid Commun Mass Spectrom. 2020 Oct 30;34(20):e8887. doi: 10.1002/rcm.8887.