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| Poisoning Process of the V2O5-CeO2/TiO2 Catalyst by the Cumulative Effect of CaO | |
| Zheng, Yang1,2; Guo, Yangyang1; Luo, Lei1; Wang, Jian1; Zhu, Tingyu1,3 | |
| 2021-09-16 | |
| Source Publication | ENERGY & FUELS
 |
| ISSN | 0887-0624 |
| Volume | 35Issue:18Pages:14876-14884 |
| Abstract | The poisoning process for the selective catalytic reduction of NO with NH3(NH3-SCR) by the cumulative effect of CaO on the V2O5-CeO2/TiO2(V0.5Ce20Ti) catalyst is explored in this study. Experimental results show that the CaO cumulative effect varies with the temperature windows. In a low-temperature window of about 175 degrees C, the NO conversion increased from 8.63 to 15.53% before the Ca/V molar ratio reached 0.4. The increased amount of adsorbed NO2 species by CaO doping promotes the activity via the Langmuir-Hinshelwood mechanism. In a high-temperature window of about 300 degrees C, the NO conversion remained as high as approximately 96% before the Ca/V molar ratio reached 0.6 and then rapidly decreased to 81.1%. The CaO doping amount was inversely proportional to the Ce4+/(Ce4+ + Ce3+) and V5+/(V5+ + V4+) ratios. The catalyst activity was jointly affected by the redox activity, NH3 adsorption capacity, and NOx adsorption capacity. For SO2-poisoned catalysts, the NH3 oxidation reaction leads to a reduction in NO conversion on V0.5Ce20Ti. For CaO-poisoned catalysts, SO2 promoted Bronsted NH3 adsorption and offset the redox reduction to some extent; thus the NH3 SCR activity was increased. |
| DOI | 10.1021/acs.energyfuels.1c01887 |
| Language | 英语 |
| WOS Keyword | CE/TIO2 CATALYST ; ACTIVE-SITES ; REDUCTION ; MECHANISM ; OXIDE ; NH3 ; NO ; V2O5-WO3/TIO2 ; DEACTIVATION ; RESISTANCE |
| Funding Project | National Science Foundation of China[51778600] ; National Science Foundation of China[52170119] ; Department of science and technology of Hebei Province[19273715D] ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment[NEL-KF-2019017] |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| Funding Organization | National Science Foundation of China ; Department of science and technology of Hebei Province ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment |
| WOS ID | WOS:000697334900047 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/50321 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Guo, Yangyang; Zhu, Tingyu |
| Affiliation | 1.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China |
| Recommended Citation GB/T 7714 | Zheng, Yang,Guo, Yangyang,Luo, Lei,et al. Poisoning Process of the V2O5-CeO2/TiO2 Catalyst by the Cumulative Effect of CaO[J]. ENERGY & FUELS,2021,35(18):14876-14884. |
| APA | Zheng, Yang,Guo, Yangyang,Luo, Lei,Wang, Jian,&Zhu, Tingyu.(2021).Poisoning Process of the V2O5-CeO2/TiO2 Catalyst by the Cumulative Effect of CaO.ENERGY & FUELS,35(18),14876-14884. |
| MLA | Zheng, Yang,et al."Poisoning Process of the V2O5-CeO2/TiO2 Catalyst by the Cumulative Effect of CaO".ENERGY & FUELS 35.18(2021):14876-14884. |
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