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

Yu Gao Wang; Xian Yong Wei; Hong Lei Yan; Fang Jing Liu; Peng Li; Zhi Min Zong

doi:10.1016/j.fuproc.2014.04.007

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

Yu Gao Wang
, Xian Yong Wei^*
, Hong Lei Yan
, Fang Jing Liu
, Peng Li
, Zhi Min Zong

^*Corresponding author for this work

China University of Mining and Technology

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

Abstract

Jincheng No. 15 anthracite (J15A) was pretreated with aqueous hydrogen peroxide and then subjected to sequential oxidation for 6 times, i.e., oxidation runs 1-6 (O_r1-O_r6), with aqueous sodium hypochlorite. Significantly more organic matter in J15A was oxidized into water-soluble portion (WSP) by sequential oxidation than by one-run oxidation for the same period of time. The relative content of non-chlorine benzenepolycarboxylic acids (BPCAs) in the WSP increased from O_r1 to O_r6. Among BPCAs, benzenehexacarboxylic acid can be concentrated over 34% by subsequent solvent extraction. J15A particles were oxidized from external portion (EP) to internal portion (IP). According to the product types, cata-condensed aromatics and polyaryls in the EP are significantly more than those in the IP, while peri-condensed aromatics in the IP are remarkably abundant than those in the EP. This investigation provides a promising approach for obtaining BPCAs from high-rank coals and for understanding aromatic structural features of high-rank coals.

Original language	English
Pages (from-to)	182-189
Number of pages	8
Journal	Fuel Processing Technology
Volume	125
DOIs	https://doi.org/10.1016/j.fuproc.2014.04.007
Publication status	Published - Sept 2014
Externally published	Yes

Keywords

Anthracite
Aromatics
Benzenepolycarboxylic acids
Sequential oxidation

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10.1016/j.fuproc.2014.04.007

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title = "Sequential oxidation of Jincheng No. 15 anthracite with aqueous sodium hypochlorite",

abstract = "Jincheng No. 15 anthracite (J15A) was pretreated with aqueous hydrogen peroxide and then subjected to sequential oxidation for 6 times, i.e., oxidation runs 1-6 (Or1-Or6), with aqueous sodium hypochlorite. Significantly more organic matter in J15A was oxidized into water-soluble portion (WSP) by sequential oxidation than by one-run oxidation for the same period of time. The relative content of non-chlorine benzenepolycarboxylic acids (BPCAs) in the WSP increased from Or1 to Or6. Among BPCAs, benzenehexacarboxylic acid can be concentrated over 34\% by subsequent solvent extraction. J15A particles were oxidized from external portion (EP) to internal portion (IP). According to the product types, cata-condensed aromatics and polyaryls in the EP are significantly more than those in the IP, while peri-condensed aromatics in the IP are remarkably abundant than those in the EP. This investigation provides a promising approach for obtaining BPCAs from high-rank coals and for understanding aromatic structural features of high-rank coals.",

keywords = "Anthracite, Aromatics, Benzenepolycarboxylic acids, Sequential oxidation",

author = "Wang, \{Yu Gao\} and Wei, \{Xian Yong\} and Yan, \{Hong Lei\} and Liu, \{Fang Jing\} and Peng Li and Zong, \{Zhi Min\}",

year = "2014",

month = sep,

doi = "10.1016/j.fuproc.2014.04.007",

language = "English",

volume = "125",

pages = "182--189",

journal = "Fuel Processing Technology",

issn = "0378-3820",

publisher = "Elsevier B.V.",

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T1 - Sequential oxidation of Jincheng No. 15 anthracite with aqueous sodium hypochlorite

AU - Wang, Yu Gao

AU - Wei, Xian Yong

AU - Yan, Hong Lei

AU - Liu, Fang Jing

AU - Li, Peng

AU - Zong, Zhi Min

PY - 2014/9

Y1 - 2014/9

N2 - Jincheng No. 15 anthracite (J15A) was pretreated with aqueous hydrogen peroxide and then subjected to sequential oxidation for 6 times, i.e., oxidation runs 1-6 (Or1-Or6), with aqueous sodium hypochlorite. Significantly more organic matter in J15A was oxidized into water-soluble portion (WSP) by sequential oxidation than by one-run oxidation for the same period of time. The relative content of non-chlorine benzenepolycarboxylic acids (BPCAs) in the WSP increased from Or1 to Or6. Among BPCAs, benzenehexacarboxylic acid can be concentrated over 34% by subsequent solvent extraction. J15A particles were oxidized from external portion (EP) to internal portion (IP). According to the product types, cata-condensed aromatics and polyaryls in the EP are significantly more than those in the IP, while peri-condensed aromatics in the IP are remarkably abundant than those in the EP. This investigation provides a promising approach for obtaining BPCAs from high-rank coals and for understanding aromatic structural features of high-rank coals.

AB - Jincheng No. 15 anthracite (J15A) was pretreated with aqueous hydrogen peroxide and then subjected to sequential oxidation for 6 times, i.e., oxidation runs 1-6 (Or1-Or6), with aqueous sodium hypochlorite. Significantly more organic matter in J15A was oxidized into water-soluble portion (WSP) by sequential oxidation than by one-run oxidation for the same period of time. The relative content of non-chlorine benzenepolycarboxylic acids (BPCAs) in the WSP increased from Or1 to Or6. Among BPCAs, benzenehexacarboxylic acid can be concentrated over 34% by subsequent solvent extraction. J15A particles were oxidized from external portion (EP) to internal portion (IP). According to the product types, cata-condensed aromatics and polyaryls in the EP are significantly more than those in the IP, while peri-condensed aromatics in the IP are remarkably abundant than those in the EP. This investigation provides a promising approach for obtaining BPCAs from high-rank coals and for understanding aromatic structural features of high-rank coals.

KW - Anthracite

KW - Aromatics

KW - Benzenepolycarboxylic acids

KW - Sequential oxidation

UR - https://www.scopus.com/pages/publications/84899684198

U2 - 10.1016/j.fuproc.2014.04.007

DO - 10.1016/j.fuproc.2014.04.007

M3 - Article

AN - SCOPUS:84899684198

SN - 0378-3820

VL - 125

SP - 182

EP - 189

JO - Fuel Processing Technology

JF - Fuel Processing Technology

ER -

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

Abstract

Keywords

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