摘要
论文采用X射线光电子能谱(XPS)方法分析微波脱硫前后煤中硫的赋存形态及其变化规律。结果显示:煤中硫主要以噻吩类、砜(亚砜)类、硫醇(硫醚)以及硫酸盐类矿物质的形式存在,经过微波脱硫后煤的总硫及有机硫含量都出现下降。在所有含硫基团中噻吩类硫所占相对含量降低,由69.26%下降至18.10%;亚砜类硫相对含量有所增加;硫酸盐类硫相对含量显著增加,由8.58%上升至48.18%。煤中硫元素有向氧化态转化的趋势。
The variation of sulfur chemical forms was analyzed with XPS,for coal sample desulfurized with microwave.The results show that,the sulfur in coal exists in the forms of thiophene,sulfone（ sulfoxide）,mercaptan（ sulfoether） and sulfate. After microwave desulfurization,the content of total sulfur and organic sulfur decreases. Among all the sulfur-containing groups,the relative content of thiophene sulfur decreases from 69. 26% to 18. 10%; and the relative content of sulfoxide sulfur increases slightly,and that of sulfate sulfur increases from 8. 58% to 48. 18%. The sulfur in coal tends to transform into oxidation state.
出处
《煤炭工程》
北大核心
2014年第12期111-113,共3页
Coal Engineering
基金
国家自然科学基金资助项目(51274199)
教育部博士点基金(20130095110008)
关键词
煤炭
微波脱硫
XPS
硫形态
有机硫
microwave desulfurization of coal
XPS
sulfur chemical forms
organic sulfur
