Activated Semi-coke in SO2 Removal from Flue Gas: Selection of   Activation Methodology and Desulfurization Mechanism Study

doi:10.1021/ef400351a

CORC > 北京大学 > 工学院

	Activated Semi-coke in SO2 Removal from Flue Gas: Selection of Activation Methodology and Desulfurization Mechanism Study
	Yan, Zheng ; Liu, Lili ; Zhang, Yueling ; Liang, Jinping ; Wang, Jinping ; Zhang, Zuotai ; Wang, Xidong
刊名	energy and fuels
	2013
关键词	SULFURIC-ACID AEROSOLS CARBON-FIBERS CHEMICAL ACTIVATION SIZE DISTRIBUTION POROUS CARBONS HEAT-TREATMENT SPANISH COALS NITRIC-ACID ADSORPTION TEMPERATURE
DOI	10.1021/ef400351a
英文摘要	Activated semi-coke, an economical carbonaceous material, is employed in the removal of SO2 from simulated flue gas of an industrial power plant. Activation by four commonly used agents, including CO2, KOH, ZnCl2, and H3PO4, is studied in detail, which demonstrates that the sample treated with KOH at high temperature presents the best performance on removal of SO2. Further investigation on the physical and chemical properties reveals that both optimized pore structure and increased amount of active sites of activated semi-coke could contribute to the high desulfurization capacity. The semi-coke activated with KOH is selected to discuss possible mechanisms of the adsorption and desorption processes. Performances with variation of desulfurization temperatures evidence that physically adsorbed SO2 can transform into chemically adsorbed SO, which is significantly affected by temperature. Desulfurization behaviors under different flue gas compositions show that oxidation of SO2 to SO3 plays a key role in SO2 removal. By the analyzing desorption behavior of the samples, a reactive intermediate, C(O) complex, is proposed to be generated by dissociated chemisorption of O-2 onto the surface of activated semi-coke, which serves as the dominating active site in oxidation of SO2. Besides, activated semi-coke exhibits several favorable properties in this study that could offer the prospect for further application in industrial desulfurization.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000320911200023&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Energy & Fuels; Engineering, Chemical; SCI(E); EI; 17; ARTICLE; 6; 3080-3089; 27
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154468]
专题	工学院
推荐引用方式 GB/T 7714	Yan, Zheng,Liu, Lili,Zhang, Yueling,et al. Activated Semi-coke in SO2 Removal from Flue Gas: Selection of Activation Methodology and Desulfurization Mechanism Study[J]. energy and fuels,2013.
APA	Yan, Zheng.,Liu, Lili.,Zhang, Yueling.,Liang, Jinping.,Wang, Jinping.,...&Wang, Xidong.(2013).Activated Semi-coke in SO2 Removal from Flue Gas: Selection of Activation Methodology and Desulfurization Mechanism Study.energy and fuels.
MLA	Yan, Zheng,et al."Activated Semi-coke in SO2 Removal from Flue Gas: Selection of Activation Methodology and Desulfurization Mechanism Study".energy and fuels (2013).