Enhanced Effect of O/N Groups on the Hg-0 Removal Efficiency over the HNO3-Modified Activated Carbon | |
Tong Li1,2; Xu Wen-Qing1; Qi Hao1,2; Zhou Xuan1; Liu Rui-Hui1; Zhu Ting-Yu1 | |
刊名 | ACTA PHYSICO-CHIMICA SINICA |
2015-03-15 | |
卷号 | 31期号:3页码:512-518 |
关键词 | Elemental mercury Activated carbon HNO3- Oxygen functional group Nitrogen functional group |
ISSN号 | 1000-6818 |
通讯作者 | Zhu, TY (reprint author), Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing Engn Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China. |
英文摘要 | HNO3-modified activated carbon (AC) was prepared to determine its mercury removal ability on a fixed-bed reactor. In this study, the HNO3-modified AC was found to be effective for mercury removal in simulated flue gas. The original sample, the HNO3-modified sample and the production sample were characterized by elemental analysis, Brunauer-Emmett-Teller (BET) specific surface area measurements, scanning electron microscopy (SEM), Raman spectra, Boehm titrations, temperature programmed desorption (TPD) technique, and X-ray photoelectron spectroscopy (XPS). The results- show that HNO3 treatment increases the content of oxygen and nitrogen on the AC. Compared with the physical characteristics of HNO3-modified AC, the effects of its chemical characteristics on mercury removal are more significant. The Hg-0 is mainly oxidized to HgO by the HNO3-modified AC. The oxygen functional groups, possibly carbonyls, esters or anhydrides were found to be the adsorption sites for mercury removal, and these groups were reduced to hydroxyl groups or ether groups. The N-functional groups, possibly pyrrolic tautomers, were found to be the active catalytic sites. The mechanism for Hg-0 removal by HNO3-modified activated carbon is proposed based on the characterization results. |
学科主题 | Chemistry |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Chemistry, Physical |
研究领域[WOS] | Chemistry |
关键词[WOS] | ELEMENTAL MERCURY ; SURFACE-PROPERTIES ; FLY-ASH ; ADSORPTION ; OXIDATION ; CHEMISTRY ; SORBENTS ; FIBERS ; OXYGEN ; GAS |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000351653100015 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/13804] |
专题 | 过程工程研究所_研究所(批量导入) |
作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing Engn Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Tong Li,Xu Wen-Qing,Qi Hao,et al. Enhanced Effect of O/N Groups on the Hg-0 Removal Efficiency over the HNO3-Modified Activated Carbon[J]. ACTA PHYSICO-CHIMICA SINICA,2015,31(3):512-518. |
APA | Tong Li,Xu Wen-Qing,Qi Hao,Zhou Xuan,Liu Rui-Hui,&Zhu Ting-Yu.(2015).Enhanced Effect of O/N Groups on the Hg-0 Removal Efficiency over the HNO3-Modified Activated Carbon.ACTA PHYSICO-CHIMICA SINICA,31(3),512-518. |
MLA | Tong Li,et al."Enhanced Effect of O/N Groups on the Hg-0 Removal Efficiency over the HNO3-Modified Activated Carbon".ACTA PHYSICO-CHIMICA SINICA 31.3(2015):512-518. |
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