XPS Analysis of Shenfu Coal with Different Density Fraction Under UV Catalytic Photooxidation
YANG Zhi-yuan
ZHOU An-ning
ZHANG Hong
ZHANG Qun
Abstract：The UV photooxidation of Shenfu coal with different densitv fraction,which named D3(1.375-1.400 g/cm~3)and D4(>1.400 g/cm~3),respectively,were carried out in a fixed bed photoreactor.The difference of structural characteristics on the surface of coal and its den-mty fraction were analyzed comparatively using a X-ray photoelectron spectroscopy(XPS) method.The results show that the main form of oxygenous functional groups is C-O on the coal surface.Three types of coal nitrogen(pyrrolic,pyridinic and quaternary functionalities)in coal and its different density fraction,were found.The main forms of nitrogen on the surfaces of Shenfu coal were quaternary and pyrrolic,while on the surfaces of D3 densitv fraction were pyrrolic and pyridinic,D4 density fraction were pyrrolic,respectively.After the UV photooxi-dation of coal samples,the contents of oxygen functional groups of all coal samples decreased,while the contents of C-C increased. Meanwhile,the forms of quaternary nitrogen also con-verted to pyrrolic and pyridinic nitrogen on the surface of coal.
Keywords：Shenfu coaldifferent density fractioncatalytic photooxidationXPS
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 98-103 )