Knowledge Management System Of Institute of process engineering,CAS
| Role of NO and SO(2 )in mercury oxidation over a La2O3/Fe2O3 catalyst with high thermal stability | |
| Liu, Ruihui1,3; Yang, Yang2,4; Zhu, Tingyu2; Xu, Wenqing2,4 | |
| 2021-11-01 | |
| Source Publication | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| ISSN | 1001-0742 |
| Volume | 109Pages:36-44 |
| Abstract | In this study, the thermal stability of a ferric oxide catalyst for mercury oxidation was found to be considerably promoted by doping with La2O3. The catalysts doped with La2O3 maintained a higher surface area when subjected to high-temperature calcination, with lower average pore size and a narrower pore size distribution. X-ray diffraction (XRD) results revealed that La2O3 doping hinders the growth of catalyst particles and crystallization of the material at high temperatures. Both NO and SO2 inhibited Hg-0 oxidation over the La2O3/Fe2O3 catalyst. Fourier transform infrared (FTIR) spectra revealed that SO2 reacts with O-2 over the catalysts to form several species that are inert for mercury oxidation, such as SO42-, HSO4-, or other related species; these inert species cover the catalyst surface and consequently decrease Hg(0 )oxidation capacity. In addition, NO or SO2 competed with Hg-0 for active sites on the La2O3/Fe2O3 catalyst and hindered the adsorption of mercury, thereby inhibiting subsequent Hg-0 oxidation. Hg-0 oxidation on the La2O3/Fe2O3 catalyst mainly followed the EleyRideal mechanism. Moreover, the inhibition effects of NO and SO2 were at least partially reversible, and the catalytic activity was temporarily restored after eliminating NO or SO2. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| Keyword | Mercury Flue gas Fe2O3 La2O3 Thermal stability |
| DOI | 10.1016/j.jes.2020.11.014 |
| Language | 英语 |
| WOS Keyword | COMBUSTION FLUE-GAS ; ELEMENTAL MERCURY ; METAL-OXIDES ; HG-0 REMOVAL ; SORBENTS ; ADSORPTION ; COMPONENTS ; FE2O3 ; CUOX ; SO2 |
| Funding Project | National Key Research and Development Program of China[2017YFC0210501] ; Fundamental Research Funds for the Central Universities[N2123031] ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment[NELKF-201902] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| Funding Organization | National Key Research and Development Program of China ; Fundamental Research Funds for the Central Universities ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment |
| WOS ID | WOS:000740441300004 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/51643 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Xu, Wenqing |
| Affiliation | 1.Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Res Ctr Proc Pollut Control, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 3.Northeastern Univ Qinhuangdao, Sch Resources & Mat, Qinhuangdao 066004, Hebei, Peoples R China 4.Tsinghua Univ, Natl Engn Lab Flue Gas Pollutants Control Technol, Beijing 100084, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Ruihui,Yang, Yang,Zhu, Tingyu,et al. Role of NO and SO(2 )in mercury oxidation over a La2O3/Fe2O3 catalyst with high thermal stability[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,109:36-44. |
| APA | Liu, Ruihui,Yang, Yang,Zhu, Tingyu,&Xu, Wenqing.(2021).Role of NO and SO(2 )in mercury oxidation over a La2O3/Fe2O3 catalyst with high thermal stability.JOURNAL OF ENVIRONMENTAL SCIENCES,109,36-44. |
| MLA | Liu, Ruihui,et al."Role of NO and SO(2 )in mercury oxidation over a La2O3/Fe2O3 catalyst with high thermal stability".JOURNAL OF ENVIRONMENTAL SCIENCES 109(2021):36-44. |
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