Catalytic oxidation of hydrogen sulfide over unmodified and impregnated activated carbon

	Catalytic oxidation of hydrogen sulfide over unmodified and impregnated activated carbon
	Xiao, Yonghou 1,2; Wang, Shudong 1; Wu, Diyong 1; Yuan, Quan 1
刊名	separation and purification technology
	2008-03-01
卷号	59 期号:3 页码:326-332
关键词	impregnated activated carbon hydrogen sulfide removal catalytic oxidation characterization
通讯作者	袁权
产权排序	1;1
英文摘要	a coal-based activated carbon (ac) and an impregnated activated carbon (iac) were used as low concentration hydrogen sulfide (h2s) oxidation catalysts at ambient temperature. the effects of o-2 and relative humidity on the performance of the samples for h2s removal were investigated. the materials before and after desulfurization tests were characterized using nitrogen adsorption, thermal analysis, xrd, tpd and sem with edax. the results demonstrate that impregnation with na2co3 as the main agent makes the ac become an efficient catalyst for h,s oxidation, and water has a highly beneficial effect on the process. moreover, the sulfur capacity of the iac attains as high as ca. 420 mg s/g iac, which mainly attributes to the high catalytic activity and it allows the pores be fully utilized. furthermore, elemental sulfur is the dominant product, and a little amount of sulfuric acid is produced on both the ac and iac. for the ac, the formation of sulfuric acid suppresses h2s dissociation and leads to rapid deactivation. whereas, the impregnated na2co3 prevents deactivation of the iac until the pores are almost completely saturated by products. (c) 2007 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; technology
类目[WOS]	engineering, chemical
研究领域[WOS]	engineering
关键词[WOS]	sewage-treatment plants ; surface-chemistry ; h2s removal ; sulfur ; adsorbents ; adsorption
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000254160200014
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/100507]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Yonghou,Wang, Shudong,Wu, Diyong,et al. Catalytic oxidation of hydrogen sulfide over unmodified and impregnated activated carbon[J]. separation and purification technology,2008,59(3):326-332.
APA	Xiao, Yonghou,Wang, Shudong,Wu, Diyong,&Yuan, Quan.(2008).Catalytic oxidation of hydrogen sulfide over unmodified and impregnated activated carbon.separation and purification technology,59(3),326-332.
MLA	Xiao, Yonghou,et al."Catalytic oxidation of hydrogen sulfide over unmodified and impregnated activated carbon".separation and purification technology 59.3(2008):326-332.