期刊
APPLIED SURFACE SCIENCE
卷 293, 期 -, 页码 293-298出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2013.12.151
关键词
Bituminous coal; Surface properties; Weathering processes; XPS; SEM
类别
资金
- National Natural Science Foundation of China
- Advanced Analysis & Computation Center of China University of Mining and Technology
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.
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