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Mechanism of sulfur removal from coal by microwave assisted acetic acid-hydrogen peroxide system.
- Source :
- Journal of Sulfur Chemistry; Apr2023, Vol. 44 Issue 2, p168-185, 18p
- Publication Year :
- 2023
-
Abstract
- The desulfurization effect of Ningxia Shuangma coal (SM) with an acetic acid-hydrogen peroxide system assisted by microwave, ultrasonic and ultraviolet light was compared. The results show that microwave-assisted desulfurization has the best effect. When the microwave power is 900W, the irradiation time is 5 min, and the volume ratio of acetic acid to hydrogen peroxide is 1:10, the desulfurization rate can reach 55.82%. Moreover, microwave-assisted desulfurization can effectively improve the removal effect of organic sulfur. XRD, XPS, SEM and other characterization showed that microwave assisted can effectively reduce the mineral content, expose more sulfur-containing groups, and improve the desulfurization effect. The desulfurization rate of three sulfur-containing compounds is: dibenzyl sulfide > diphenyl sulfoxide > benzothiophene. With the increase of intensity of the applied electric field, the C–S bond gets easier to fracture, the applied electric field can reduce the reaction energy barrier, is a benefit to the reaction. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17415993
- Volume :
- 44
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Journal of Sulfur Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 162418808
- Full Text :
- https://doi.org/10.1080/17415993.2022.2118539