Investigation of the molecular structure of organic sulfur in coal by XAFS spectroscopy

1989 ◽  
Vol 3 (2) ◽  
pp. 200-205 ◽  
Author(s):  
G. P. Huffman ◽  
F. E. Huggins ◽  
Sudipa Mitra ◽  
N. Shah ◽  
R. J. Pugmire ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Organic Sulfur ◽  
Xafs Spectroscopy ◽  
Sulfur In Coal

scholarly journals Research on the Composition and Distribution of Organic Sulfur in Coal

Molecules ◽  
2016 ◽  
Vol 21 (5) ◽  
pp. 630 ◽  
Author(s):  
Lanjun Zhang ◽  
Zenghua Li ◽  
Yongliang Yang ◽  
Yinbo Zhou ◽  
Jinhu Li ◽  
...  
Keyword(s):  
Organic Sulfur ◽  
Sulfur In Coal

Microwave Applied in Coal Desulfurization Process

2011 ◽  
Vol 71-78 ◽  
pp. 2122-2126 ◽  
Author(s):  
Jie Mi ◽  
Rui Di Wei
Keyword(s):  
Microwave Irradiation ◽  
Irradiation Time ◽  
Sulfur Removal ◽  
Organic Sulfur ◽  
Xps Analysis ◽  
Peroxyacetic Acid ◽  
Inorganic Sulfur ◽  
Coal Desulfurization ◽  
Desulfurization Process ◽  
Sulfur In Coal

In this paper, the desulfurization of Fangshan coal was carried out by tetrachloroethylene extraction under ultrasonic and microwave irradiation. The GC-MS analysis of the tetrachloroethylene extraction reveals that organic sulfur in coal can be removed by tetrachloroethylene extract under ultrasonic and microwave irradiation. It is found that microwave irradiation time has great effect on organic sulfur removal. With the microwave irradiation time increases, the efficiency of organic sulfur removal increases. The desulphurization yield reaches maximum, 45%, when the time is 30 minutes or more. It can be clearly seen that Fangshan coal was oxidated by peroxyacetic acid under ultrasonic and microwave irradiation. From the XPS analysis of the macerals of the coal, most of the inorganic sulfur and organic sulfur are removed, especially thioether and thioalcohol which can be completely removed. These results suggest that microwave is an effective way to remove sulfur in coal.

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