期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 268, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2020.118749
关键词
Catalytic oxidation; Volatile organic compounds (VOCs); Mesoporous silica support; CuO nanocrystals and Cu-oxo-Fe clusters; Synergistic effect
资金
- Slovenian Research Agency [P1-0021, P2-0152, P2-150, J2-7319, BI-BG/11-12-009]
- Bulgarian Scientific Fund (Bulgaria-Slovenia bilateral project) [AHTC CHOBEH1451 01/6]
- DESY
- European Community's Seventh Framework Program FP7/2007-2013 under grant agreement CALIPSO [312284 EU]
- HASYLAB beamline C [11-20080058 EC]
- ELETTRA beamline XAFS [200759]
- European Regional Development Fund within the Operational Programme Science and Education for Smart Growth 2014 -2020 under the Project Center of Exellence: National center of mechatronics and clean technologies [BG05M20P001-1.001-0008]
Monometallic (CuO and FeOx) and bimetallic (CuFeOx) entities on different supports are promising transition-metal low-cost catalysts for catalytic oxidation of volatile organic compounds (VOC) from industrial air alternatively to noble-metal catalysts which are currently in use. In this work we report for the first time that the promotion of catalytic oxidation of toluene as a model VOC is due to the cooperative redox effect between CuO nanocrystals and finely dispersed Cu-oxo-Fe clusters on mesoporous silica with defined Fe/Cu molar ratio. This increases the number and reactivity of adsorbed electrophilic (O- and O-2(-)) as well as nucleophilic lattice oxygen (O-2) species at the CuO crystal and and Cu-oxo-Fe cluster interface, thus providing up to twofold enhancement in catalytic activity for total oxidation of toluene. Catalysts were prepared via direct synthesis of Fefunctionalized disordered mesoporous silica containing only isolated iron sites followed by copper addition via impregnation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据