Insight into the structural features of macromolecular aromatic species in Huolinguole lignite through ruthenium ion-catalyzed oxidation

HL is rich in bridged linkages and CH2CH2 and CH2CH2CH2 are the main bridged linkages connecting aromatic rings according to ruthenium ion-catalyzed oxidation and subsequent analyses of the resulting soluble products with GC/MS and ASAP/TOF-MS. •The structural features of Huolinguole lignite (HL) we...

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Bibliographic Details
Published in:Fuel (Guildford) 2014-07, Vol.128, p.231-239
Main Authors: Lv, Jing-Hui, Wei, Xian-Yong, Qing, Yu, Wang, Ying-Hua, Wen, Zhe, Zhu, Ying, Wang, Yu-Gao, Zong, Zhi-Min
Format: Article
Language:English
Subjects:
Alkanes
Applied sciences
Aromatic compounds
Aromatic species
Bridged linkages
Condensing
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fuels
Joining
Lignite
Mass spectrometers
Oxidation
Ruthenium
Ruthenium ion-catalyzed oxidation
Structural features
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Summary:HL is rich in bridged linkages and CH2CH2 and CH2CH2CH2 are the main bridged linkages connecting aromatic rings according to ruthenium ion-catalyzed oxidation and subsequent analyses of the resulting soluble products with GC/MS and ASAP/TOF-MS. •The structural features of Huolinguole lignite (HL) were investigated through RICO.•CH2CH2 and CH2CH2CH2 are dominant bridged linkages connecting ARs in HL.•Highly condensed aromatic species in HL contain BP or PN skeleton structure. Ruthenium ion-catalyzed oxidation (RICO) of Huolinguole lignite (HL) was performed to understand the structural features of macromolecular aromatic species in HL by analyzing the resulting soluble species (SSs) with a gas chromatography/mass spectrometer and atmospheric-pressure solids-analysis probe/time of flight-mass spectrometer. The results show that in the SSs, alkanedioic acids are predominantly abundant and most of them are succinic acid and glutaric acid, indicating that HL is rich in bridged linkages (BLs) and CH2CH2 and CH2CH2CH2 are the main BLs connecting aromatic rings. The total yield of benzenecarboxylic acids with less carboxylic groups (CGs) (the number of CGs
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2014.03.007