https://scholars.lib.ntu.edu.tw/handle/123456789/406442
標題: | NOx abatement from stationary emission sources by photo-assisted SCR: Lab-scale to pilot-scale studies | 作者: | Yu J.C.C. Nguyen V.-H. Lasek J. Chiang S.-W. Li D.X. Wu J.C.S. |
關鍵字: | Desulfurization;Lab-scale;NOx abatement;Photo-assisted SCR;Photocatalyst;Pilot-scale | 公開日期: | 2016 | 卷: | 523 | 起(迄)頁: | 294-303 | 來源出版物: | Applied Catalysis A: General | 摘要: | In developing a higher activity for NOx abatement from stationary emission sources, photo-assisted selective catalytic reduction (photo-SCR) was systematically investigated over TiO2 supported on a spherical £\-Al2O3/£^-Al2O3. The formation of NO2 was virtually suppressed in the reaction temperature range of 110¡V200?¢XC. The NOx removal efficiencies of TiO2/£^-Al2O3 photocatalyst at 120?¢XC for real flue gas (in pilot-scale photoreactor) and simulated flue gas (in lab-scale photoreactor) were 68¡V75% and 43.5%, respectively, in the presence of reducing reagent (C4H10). SEM and XPS techniques revealed that sulfur temporarily occupied the active sites of the photocatalyst, causing deactivation. Spent TiO2/£^-Al2O3 photocatalyst was regenerated via desulfurization by either air or hydrogen at 400¡V500?¢XC. The effects of regeneration temperature and regeneration time on the photocatalytic activity are methodically investigated, demonstrating that using hydrogen at 500?¢XC in 1?h could completely regenerate the spent photocatalyst. ? 2016 Elsevier B.V. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/406442 | ISSN: | 0926860X | DOI: | 10.1016/j.apcata.2016.06.020 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。