Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization

doi:10.1016/j.fuel.2017.10.087

	Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization
	Chen, SJ; Wang, SW; Tao, XX; He, H; Feng, L; Zheng, L; Zhao YD(赵屹东); Ma CY(马陈燕); Ma, CY; Zheng L(郑雷)
刊名	FUEL
	2018
卷号	214 页码:554-560
关键词	Desulfurization Microwave High-sulfur coal Sulfur-containing model compounds
ISSN号	0016-2361
DOI	10.1016/j.fuel.2017.10.087
文献子类	Article
英文摘要	To clarify the action mechanisms of microwave field with peroxyacetic acid in the process of sulfur removal from coal, this study was carried out on the molecular level and diphenyl sulfide was selected as the sulfur model compound of coal. Its oxidation reaction path was determined utilizing XANES and GC/MS. The transmission reflection method was adopted to analyze the dielectric property of the substances detected before. Their CeS bond dissociation energies (BDEs), bond dissociation times (BDTs) and the intrinsic reaction coordinate of de-sulfurization reactions were calculated under various extra electric fields to support the experimental results. Results showed that most of diphenyl sulfide was oxidized to the corresponding sulfoxide and sulfone, resulting in a desulfurization degree of 22.37% after microwaving treatment at 500W for 120 s combined with peroxyacetic acid. With the oxidation degree deepening, the absorption efficiency of microwave energy for sulfur groups increased and their CeS BDEs decreased, resulting in the reducing of their CeS BDTs. In addition, the CeS BDTs and the barrier of desulfurization reactions were reduced under the extra electric field. These findings confirmed that the sulfur-containing bonds cleavage and desulfurization reactions of sulfur groups were promoted under the extra microwave field with peroxyacetic acid, which is conducive to the effective removal of sulfur groups from coal.
电子版国际标准刊号	1873-7153
WOS关键词	HIGH-SULFUR COAL ; BOND-DISSOCIATION ENTHALPIES ; ELECTRON-TRANSFER PROCESS ; ORGANIC SULFUR ; MODEL COMPOUNDS ; AB-INITIO ; CHEMICAL DESULFURIZATION ; DIELECTRIC-PROPERTIES ; PYROLYSIS ; OXIDATION
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
WOS记录号	WOS:000417103800059
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285501]
专题	高能物理研究所_多学科研究中心高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Chen, SJ,Wang, SW,Tao, XX,et al. Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization[J]. FUEL,2018,214:554-560.
APA	Chen, SJ.,Wang, SW.,Tao, XX.,He, H.,Feng, L.,...&Tang, LF.(2018).Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization.FUEL,214,554-560.
MLA	Chen, SJ,et al."Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization".FUEL 214(2018):554-560.