Journal
CATALYSIS TODAY
Volume 332, Issue -, Pages 189-194Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2018.06.027
Keywords
Confined structure; Thermal stability; Silver redispersion; Mesoporous Al2O3; CO oxidation; Soot oxidation
Funding
- National Natural Science Foundation of China [51702304]
- Natural Science Foundation of Shandong Province [ZR2017BEM006]
- Postdoctoral Science Foundation of Shandong Province [201601009]
- China Science and Technology Exchange Center [2016YFE0126600]
- National Key R&D Program of China [2017YFC0211202]
- China Postdoctoral Science Foundation [2015M580607, 2017T100516]
- Fundamental Research Funds for the Central Universities
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Developing catalysts with high cost-efficiency, good oxidation activities and strong thermal resistance is an ongoing task. Herein, we present the design and synthesis of confined catalysts with Ag protected by alumina. Thermal treatment at 800 degrees C for 10 h caused neither silver loss nor deactivation of this catalyst. Instead, nanoparticles of Ag formed because of the heat/O-2-derived ripening. These highly dispersed silver species and the catalyst's mesoporous structure worked in tandem to achieve good catalytic performance for oxidation reactions, which made the aged sample a good candidate as CO elimination and gasoline particulate filter catalysts.
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