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题名: Catalytic oxidation of hydrogen sulfide over unmodified and impregnated activated carbon
作者: Xiao, Yonghou1, 2;  Wang, Shudong1;  Wu, Diyong1;  Yuan, Quan1
通讯作者: 袁权
关键词: impregnated activated carbon ;  hydrogen sulfide ;  removal ;  catalytic oxidation ;  characterization
刊名: SEPARATION AND PURIFICATION TECHNOLOGY
发表日期: 2008-03-01
DOI: 10.1016/j.seppur.2007.07.042
卷: 59, 期:3, 页:326-332
收录类别: SCI
文章类型: Article
部门归属: 9
项目归属: 901
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
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.
关键词[WOS]: SEWAGE-TREATMENT PLANTS ;  SURFACE-CHEMISTRY ;  H2S REMOVAL ;  SULFUR ;  ADSORBENTS ;  ADSORPTION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000254160200014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100507
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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