Sequential oxidation of Jincheng No. 15 anthracite with aqueous sodium hypochlorite

Wang, Yugao; Wei, Xian‐Yong; Yan, Hong-Lei; Liu, Fang-Jing; Li, Peng; Zong, Zhi‐Min

doi:10.1016/j.fuproc.2014.04.007

Cited by 45 publications

(47 citation statements)

References 37 publications

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“…4,55,56 As Table 5 exhibits, J15A is rich in PCAs but poor in CCAs and polyaryls, which is similar to the result of the sequential oxidation of J15A with aqueous sodium hypochlorite. 4 The detection of abundant benzenepentacarboxylic and mellitic acids indicates that J15A contains large amounts of highly condensed aromatics.…”

Section: Methodsmentioning

confidence: 99%

Structural Characterization of Typical Organic Species in Jincheng No. 15 Anthracite

et al. 2015

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The structures of typical organic species in Jincheng No. 15 anthracite (J15A) were characterized by solid-state 13 C nuclear magnetic resonance, X-ray photoelectron spectrometry, X-ray diffraction, and Fourier transform infrared spectrometry in combination with gas chromatography/mass spectrometry and electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry analyses of the resulting soluble organic species from ruthenium-ion-catalyzed oxidation (RICO) of J15A. The results show that the typical organic species in J15A are condensed aromatics, along with small amounts of methyl group as the dominant side chain on the condensed aromatic rings (CARs) and methylene linkage connecting the CARs. Every aromatic cluster contains five rings on average, and the substituted degree of each aromatic ring is very low. In addition, J15A is rich in peri-condensed aromatics but poor in cata-condensed aromatics and polyaryls. The oxygen functional groups in J15A include C−O and >CO groups. Pyrrolic nitrogen species and arylthiophenes are the main organic nitrogen and sulfur species in J15A, respectively.

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Section: Methodsmentioning

confidence: 99%

Structural Characterization of Typical Organic Species in Jincheng No. 15 Anthracite

et al. 2015

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“…Obtaining detailed information on ONCs is difficult due to their low content in coals. Gas chromatography/ mass spectrometry (GC/MS) has been successfully applied in identification of some soluble species from coals [12][13][14][15][16][17][18][19], but detecting less volatile and/or thermally labile species is difficult using this technology. In addition, GC/MS analysis is easily affected by complex matrix and there are only limited standard libraries for the identification of detected species.…”

Section: Introductionmentioning

confidence: 99%

Identification of basic nitrogen compounds in ethanol-soluble portion from Zhaotong lignite ethanolysis by positive-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry

Zong

Yan

et al. 2015

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“…H 2 O 2 only shows high reactivity towards low‐rank coals and short‐chain ADAs like malonic acid and succinic acid are usually the major carboxylic acids resulting from oxidation in H 2 O 2 aqueous solution (Pan et al, ; Doskočil et al, ; Liu et al, ). The products from RICO and oxidation in NaOCl aqueous solution of coals contain a large amount of BPCAs, especially in the cases of bituminous coal and anthracite (Murata et al, ; Huang et al, ; Yao et al, ; Wang et al, , ). BPCAs can be likewise produced from oxidation in H 2 O 2 aqueous solution of low‐rank coals but usually with low yield (Liu et al, , ).…”

Section: Small‐molecular Chemicals In Cdls Identified By Gc/msmentioning

confidence: 99%

“…BPCAs are value‐added chemicals or intermediates for industrial use and were supposed to be generated from condensed aromatics species in coals via oxidation (Murata et al, ; Huang et al, ; Yao et al, ; Lv et al, ). Oxidation of high‐rank coals (e.g., anthracite) combined with appropriate separation techniques is a promising approach to produce BPCAs with high yield and high selectivity (Wang et al, , ).…”

Section: Small‐molecular Chemicals In Cdls Identified By Gc/msmentioning

confidence: 99%

“…Extracts from low‐temperature extraction or thermal dissolution of coals are promising sources of value‐added chemicals (Liu et al, ; Cong et al, ,c) and high‐performance carbon materials (Ashida et al, ). Coal oxidation products abound in valuable carboxylic acids, such as short‐chain fatty acids (Miura et al, ; Liu et al, ) and benzene polycarboxylic acids (BPCAs) (Liu et al, ; Wang et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Application of mass spectrometry in the characterization of chemicals in coal‐derived liquids

Liu

Fan

Wei

et al. 2016

Mass Spectrometry Reviews

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Coal-derived liquids (CDLs) are primarily generated from pyrolysis, carbonization, gasification, direct liquefaction, low-temperature extraction, thermal dissolution, and mild oxidation. CDLs are important feedstocks for producing value-added chemicals and clean liquid fuels as well as high performance carbon materials. Accordingly, the compositional characterization of chemicals in CDLs at the molecular level with advanced analytical techniques is significant for the efficient utilization of CDLs. Although reviews on advancements have been rarely reported, great progress has been achieved in this area by using gas chromatography/mass spectrometry (GC/MS), two-dimensional GC-time of flight mass spectrometry (GC × GC-TOFMS), and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). This review focuses on characterizing hydrocarbon, oxygen-containing, nitrogen-containing, sulfur-containing, and halogen-containing chemicals in various CDLs with these three mass spectrometry techniques. Small molecular (< 500 u), volatile and semi-volatile, and less polar chemicals in CDLs have been identified with GC/MS and GC × GC-TOFMS. By equipped with two-dimensional GC, GC × GC-TOFMS can achieve a clearly chromatographic separation of complex chemicals in CDLs without prior fractionation, and thus can overcome the disadvantages of co-elution and serious peak overlap in GC/MS analysis, providing much more compositional information. With ultrahigh resolving power and mass accuracy, FT-ICR MS reveals a huge number of compositionally distinct compounds assigned to various chemical classes in CDLs. It shows excellent performance in resolving and characterizing higher-molecular, less volatile, and polar chemicals that cannot be detected by GC/MS and GC × GC-TOFMS. The application of GC × GC-TOFMS and FT-ICR MS to chemical characterization of CDLs is not as prevalent as that of petroleum and largely remains to be developed in many respects. © 2016 Wiley Periodicals, Inc. Mass Spec Rev 36:543-579, 2017.

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Sequential oxidation of Jincheng No. 15 anthracite with aqueous sodium hypochlorite

Cited by 45 publications

References 37 publications

Structural Characterization of Typical Organic Species in Jincheng No. 15 Anthracite

Structural Characterization of Typical Organic Species in Jincheng No. 15 Anthracite

Identification of basic nitrogen compounds in ethanol-soluble portion from Zhaotong lignite ethanolysis by positive-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry

Application of mass spectrometry in the characterization of chemicals in coal‐derived liquids

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