頁籤選單縮合
題 名 | The Effect of Cr Addition on Hg⁰ Oxidation and NO Reduction over V₂O₅/TiO₂ Catalyst |
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作 者 | Song, Hao; Zhang, Menglei; Yu, Jinpin; Wu, Weihong; Qu, Ruiyang; Zheng, Chenghang; Gao, Xiang; | 書刊名 | Aerosol and Air Quality Research |
卷 期 | 18:3 2018.03[民107.03] |
頁 次 | 頁803-810 |
分類號 | 445.63 |
關鍵詞 | Mercury oxidation; NH₃-SCR; V₂O₅/TiO₂; Cr₂O₃; |
語 文 | 英文(English) |
英文摘要 | A series of V2O5-Cr2O3/TiO2 catalysts with various chromium loadings prepared by the impregnation method were studied for Hg0 oxidation and NO reduction. The results indicate that Cr2O3-modified V2O5/TiO2 exhibited improved catalytic activity for both Hg0 oxidation and NO reduction. In fact, with the addition of 5% Cr2O3 to the V/Ti catalyst, the mercury oxidation efficiency increased significantly from 6.5% to 97% in the presence of O2 at 350°C, and its SCR performance also improved in the temperature range of 250°C to 400°C. To explore the effect of individual flue gas components on Hg0 oxidation, a series of activity tests were conducted over 1% Cr-V/Ti at 350°C, and it was found that O2 and HCl promote mercury oxidation, while SO2 and H2O exhibited a somewhat inhibitive influence. H2-TPR and XPS results indicated that the enhanced catalytic performance of V2O5-Cr2O3/TiO2 is attributable to the synergetic interactions between the two active phases. |
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