Knowledge Management System Of Institute of process engineering,CAS
| Oxidation mechanisms of H2S by oxygen and oxygen-containing functional groups on activated carbon | |
| Li, Yuran1; Lin, Yuting1,2; Xu, Zhicheng1,2; Wang, Bin1; Zhu, Tingyu1,3 | |
| 2019-06-15 | |
| Source Publication | FUEL PROCESSING TECHNOLOGY
 |
| ISSN | 0378-3820 |
| Volume | 189Pages:110-119 |
| Abstract | Activated carbon (AC) has the advantage of multi-pollutant control with a high removal efficiency for flue gas purification. It is necessary to determine the oxidation mechanism and oxidation products of hydrogen sulfide (H2S) on AC to simultaneously capture H2S and SO2. A fixed-bed reactor was coupled with a mass spectrometer (MS) to detect the gaseous components and X-ray photoelectron spectroscopy (XPS) was used to distinguish the sulfur-containing species in the oxidation products on AC and thermally treated AC to investigate the actions of the oxygen-containing functional groups. The results revealed that H2S was adsorbed on the AC surface and combined with oxygen-containing functional groups to form sulfate (SO42-) in the absence of O-2. In the presence of O-2, H2S and O-2 in the atmosphere were adsorbed on the AC active sites, and the catalytic reaction produced elemental sulfur. Elemental sulfur further reacted with O-2 to produce gaseous SO2. According to the detection results of XPS and the in situ diffuse reflectance infrared Fourier transform (in situ DRIFT) spectra, an oxidation mechanism of H2S by O-2 and oxygen-containing functional groups was described. The C=C and C = O bonds were broken by H2S, and then, C-S and S-O bonds of the intermediate products were generated. The C-S bond tended to form elemental sulfur, while the S-O bond likely formed a sulfate or gaseous SO2. Porosity analysis showed that the AC specific surface area decreased after H2S adsorption and that sulfate reduced the specific surface area much more than elemental sulfur. |
| Keyword | Activated carbon Hydrogen sulfide Elemental sulfur Sulfate Sulfite |
| DOI | 10.1016/j.fuproc.2019.03.006 |
| Language | 英语 |
| WOS Keyword | SELECTIVE CATALYTIC-REDUCTION ; HYDROGEN-SULFIDE ; NO ; ADSORPTION ; SULFUR ; SO2 ; NH3 ; REACTIVITY ; NH3-SCR ; MERCURY |
| Funding Project | National Key R&D Program of China[2017YFC0210600] ; National Natural Science Foundation of China[21477131] ; Industry-School-Research Institution Program of HBIS Group Tangsteel Company |
| WOS Research Area | Chemistry ; Energy & Fuels ; Engineering |
| WOS Subject | Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Industry-School-Research Institution Program of HBIS Group Tangsteel Company |
| WOS ID | WOS:000464486300011 |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/28156 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Li, Yuran; Zhu, Tingyu |
| Affiliation | 1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Yuran,Lin, Yuting,Xu, Zhicheng,et al. Oxidation mechanisms of H2S by oxygen and oxygen-containing functional groups on activated carbon[J]. FUEL PROCESSING TECHNOLOGY,2019,189:110-119. |
| APA | Li, Yuran,Lin, Yuting,Xu, Zhicheng,Wang, Bin,&Zhu, Tingyu.(2019).Oxidation mechanisms of H2S by oxygen and oxygen-containing functional groups on activated carbon.FUEL PROCESSING TECHNOLOGY,189,110-119. |
| MLA | Li, Yuran,et al."Oxidation mechanisms of H2S by oxygen and oxygen-containing functional groups on activated carbon".FUEL PROCESSING TECHNOLOGY 189(2019):110-119. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment