Investigation of changes in surface properties of bituminous coal during natural weathering processes by XPS and SEM

被引：171

作者：

Xia, Wencheng ^{[1
]}

Yang, Jianguo ^{[1
]}

Liang, Chuan ^{[1
]}

机构：

[1] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou 221116, Jiangsu, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2014年 / 293卷

基金：

中国国家自然科学基金;

关键词：

Bituminous coal; Surface properties; Weathering processes; XPS; SEM; LOW-TEMPERATURE OXIDATION; FLOTATION; OXYGEN; RANK; HYDROPHOBICITY; FLOATABILITY; CARBON;

D O I：

10.1016/j.apsusc.2013.12.151

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this investigation, XPS and SEM were used to indicate the changes in surface properties of bituminous coal during natural weathering processes. Natural weathering processes of bituminous coal were conducted on the roof. XPS results showed that the content of C C and C H groups on bituminous coal surface decreased but the content of C-0, C=0, and 0=C-0 groups increased after natural weathering processes. Meanwhile, the contents of Al and Si elements on bituminous coal surface were also increased. SEM results showed that the surface roughness of bituminous coal was increased after natural weathering processes. Natural weathering processes not only changed surface chemical composition of bituminous coal but also changed surface topography of bituminous coal. In addition, natural weathering processes made bituminous coal surface more hydrophilic. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：293 / 298

页数：6

共 38 条

[1] Measuring surface properties and oxidation of coal macerals using the atomic force microscope [J].

Bruening, FA ;

Cohen, AD .

INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2005, 63 (3-4) :195-204

[2] Floatability and desulfurization of a low-rank (Turkish) coal by low-temperature heat treatment [J].

Cinar, M. .

FUEL PROCESSING TECHNOLOGY, 2009, 90 (10) :1300-1304

[3] XPS XAES STUDY OF CARBON-FIBERS DURING THERMAL ANNEALING UNDER UHV CONDITIONS [J].

DESIMONI, E ;

CASELLA, GI ;

SALVI, AM .

CARBON, 1992, 30 (04) :521-526

[4] Enhancement in hydrophobicity of low rank coal by surfactants - A critical overview [J].

Dey, Shobhana .

FUEL PROCESSING TECHNOLOGY, 2012, 94 (01) :151-158

[5] A DRIFTS STUDY OF THE FORMATION OF SURFACE GROUPS ON CARBON BY OXIDATION [J].

FANNING, PE ;

VANNICE, MA .

CARBON, 1993, 31 (05) :721-730

[6] INFLUENCE OF WEATHERING PROCESS ON THE FLOTATION RESPONSE OF COAL [J].

GARCIA, AB ;

MOINELO, SR ;

MARTINEZTARAZONA, MR ;

TASCON, JMD .

FUEL, 1991, 70 (12) :1391-1397

[7] Surface studies of low-temperature oxidation of bituminous coal vitrain bands using XPS and SIMS [J].

Gong, B ;

Pigram, PJ ;

Lamb, RN .

FUEL, 1998, 77 (9-10) :1081-1087

[8] Field and Laboratory Simulation Study of Hot Spots in Stockpiled Bituminous Coal [J].

Green, Uri ;

Aizenshtat, Zeev ;

Metzger, Lionel ;

Cohen, Haim .

ENERGY & FUELS, 2012, 26 (12) :7230-7235

[9] The influence of oxidation with air in comparison to oxygen in sodium carbonate solution on the surface composition of coals of different ranks [J].

Grzybek, T ;

Pietrzak, R ;

Wachowska, H .

FUEL, 2006, 85 (7-8) :1016-1023

[10] X-ray photoelectron spectroscopy study of oxidized coals with different sulphur content [J].

Grzybek, T ;

Pietrzak, R ;

Wachowska, H .

FUEL PROCESSING TECHNOLOGY, 2002, 77 :1-7

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