Identification of organochlorines and organobromines in coals

Wei, Xian‐Yong; Wang, Xiaohua; Zong, Zhi‐Min; Ni, Zhong‐Hai; Zhang, Lifang; Ji, Yafei; Xie, Kui; Lee, Chul Wee; Liu, Zhenxue; Chu, Nai-Bo; Cui, Jiao-Ying

doi:10.1016/j.fuel.2004.06.018

Cited by 75 publications

(27 citation statements)

References 14 publications

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“…Data was acquired and processed using Chemstation (software), and the compounds were analyzed by comparing mass spectra with NIST05 database. This GC/MS method was also reported by other researchers for analyses of the chemical compositions of different coal samples [16][17][18][19].…”

Section: Chemical Analysis Of Biosolubilisation Productsupporting

confidence: 58%

Biosolubilisation of Chinese lignite

Yin

Tao

Shi

et al. 2009

Energy

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Section: Chemical Analysis Of Biosolubilisation Productsupporting

confidence: 58%

Biosolubilisation of Chinese lignite

Yin

Tao

Shi

et al. 2009

Energy

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“…Organic halogens, including organic chlorines, bromines, and iodines from some coals (Wei et al, 2004;Sun et al, 2007) and a series of NCOSs and SCOSs from an oil shale (Cao et al, 2007b), some of which were not previously reported, were identified. Using the techniques, we identified a series of sulfur-and nitrogen-containing species in P3 coal.…”

Section: Introductionmentioning

confidence: 82%

“…In our previous work, group separation of soluble organic compounds in coals (Wei et al, 2004;Sun et al, 2007), macerals (Zhao et al, 2008), and oil shales (Cao et al, 2007a(Cao et al, , 2007b was achieved by fractional extraction using different solvents. Organic halogens, including organic chlorines, bromines, and iodines from some coals (Wei et al, 2004;Sun et al, 2007) and a series of NCOSs and SCOSs from an oil shale (Cao et al, 2007b), some of which were not previously reported, were identified.…”

Section: Introductionmentioning

confidence: 99%

Identification of Sulfur- and Nitrogen-containing Organic Species in the Extracts from Pocahontas No. 3 Coal

Cao

Zong

Zhao

et al. 2010

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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Pocahontas No. 3 coal was extracted with CS 2 , n-hexane, benzene, methanol, acetone, and acetone/CS 2 (1:1 vol/vol) mixed solvent sequentially. The resulting six extracts were analyzed with gas chromatography/mass spectrometer (GC/MS). Hexathiane, octathiocane, 23 sulfur-containing organic species, and 21 nitrogencontaining organic species were detected in the extracts. Sulfur-containing organic species detected in the extracts include dialkyl-and disulfides, dimexano, dibenzothiophene, benzonaphthothiophene, and their methyl-derivatives, among which dimexano and dixanthogen were seldom reported in any sediments. Methanol is effective for extracting sulfur-containing organic species without aromatic ring. Most of the nitrogencontaining organic species detected in the extracts are acridinone, carbazole and their methyl-derivatives, benzocarbazoles, amines, phenanthridinone, and piperidinone. The species number of nitrogen-containing organic compounds detected in the extracts increased with the increase in solvent polarity. Different from those reported previously, N and O atoms often coexist in the same compounds in the present study.

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“…Halogens in coals may be present as organic and inorganic occurrences (Vassilev, Eskenazy, & Vassileva, 2000;Spears, 2005). In comparison to inorganic occurrence, understanding the organic halogens is more important because of their greater geochemical implications and higher toxicities to environment (Wei et al, 2004). Organic halogens may structurally be integrated in the macromolecular coal matrix and more difficultly identified than inorganic ones (Vassilev, Eskenazy, & Vassileva, 2000).…”

Section: E Halogen-containing Chemicalsmentioning

confidence: 99%

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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Identification of organochlorines and organobromines in coals

Cited by 75 publications

References 14 publications

Biosolubilisation of Chinese lignite

Biosolubilisation of Chinese lignite

Identification of Sulfur- and Nitrogen-containing Organic Species in the Extracts from Pocahontas No. 3 Coal

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

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