微波脱硫中有机氧赋存形态的XPS分析

• 作 者: 亢旭 陶秀祥 许宁 谢茂华
• 机 构: 中国矿业大学化工学院,煤炭加工与高效洁净利用教育部重点实验室,
• 出 处: 煤炭技术
• 发表日期: 2014年07期
• 关键词: 煤炭 XPS 微波脱硫 有机氧

采用X射线光电子能谱(XPS)法分析了微波脱硫前后山西某矿高硫煤中有机氧(COO、C=O和C-O等)赋存形态的变化。研究结果表明:脱硫后煤样的O含量由17.97%上升至24.39%,C含量由70.49%下降到58.05%,同时n(O)/n(C)由0.26增至0.42。脱硫前后C1s图谱的拟合数据表明:煤样中C-H、C-C和C-O单键的含量分别从41.41%和28.74%下降到35.54%和7.10%,羰基和羧基含量分别由0.11%和0.21%增至10.38%和5.03%。

X-ray photoelectron spectroscopy (XPS) was used to analyze the occurrence of organic oxygen (COO, C = O and C-O, etc.) in a high-sulfur coal mine in Shanxi before and after microwave desulfurization. The results show that the content of O increases from 17.97% to 24.39%, the C content decreases from 70.49% to 58.05%, and the ratio of n (O) / n (C) increases from 0.26 to 0.42. The fitting data of C1s before and after desulfurization showed that the contents of CH, CC and CO single bonds decreased from 41.41% and 28.74% to 35.54% and 7.10%, respectively, and the carbonyl and carboxyl contents increased from 0.11% and 0.21% respectively 10.38% and 5.03%.