应用XPS研究镜煤中有机硫的存在形态

Application of XPS in Research on Occurrence of Organic Sulfur in Vitrain

应用 XPS方法研究了鄂尔多斯盆地西北缘乌达矿区 9煤层、1 2煤层和 1 5煤层手选镜煤的有机硫赋存状态 .结果表明 ,煤中有机硫的存在形式是多样的 ,这主要取决于成煤母质、沉积环境和泥炭堆积后的成岩变化 .在泥炭堆积过程中 ,由于菌类和藻类低等生源的大量输入 ,是导致9煤层有机硫以噻吩型 ( 5 0 .67% )为主的主要原因 ;从 9煤层 ( Ro,ran=0 .96% )到 1 5煤层 ( Ro,ran=1 .0 9% )随着煤级增高 ,有机硫表现出以噻吩型为主的趋势 ;1 5煤层含有较高的硫砜型硫( 8.42 % ) ,这可能与该煤层中壳质组含量稍高 (φ(壳质组 ) =1 .6% )

Occurrence of organic sulfur in the hand-picked vitrain samples from coal seams 9, 12 and 15 in Wuda coalfield, located on the western edge of Ordos Basin, was studied by using the XPS technology. The research shows that the versatile occurrence of organic sulfur are determined by the pre-coal material, sedimentary environment, and catagenesis. The lower organism, such as bacteria and alga into the swamp in large quantities during the peat accumulation might be the main reason for the thiophene analogue dominating (50.67%) in the organic sulfur in No.9 coal seam. The thiophene analogue content increases along with the coal rank (Ro, ran ranges from 0.96% for No.9 coal seam to 1.09% for No.15 coal seam). The high content of sulfone in No.15 coal seam is probably related to the relative high content of exinite (w (exinite)=1.6%).