標題: Salt-templated synthesis of Ce/Al catalysts supported on mesoporous silica for acetone oxidation
作者: Lin, Liang-Yi
Bai, Hsunling
環境工程研究所
Institute of Environmental Engineering
關鍵字: Aerosol;Mesoporous;Bimetallic;Catalytic oxidation;Acetone
公開日期: 27-四月-2014
摘要: A series of bimetallic Ce/Al catalysts supported on mesoporous silica catalysts were prepared through fast salt-templated aerosol process in this study. The source of sodium silicate precursor was from the alkali-extraction of the opto-electronic industrial waste. The inorganic salt formed during the silicate acidification process was served as an effective and low-cost template, which could be simply removed by water washing at room temperature. The Ce/Al-SiO2 catalysts were fabricated under various aerosol-spraying temperatures, and the temperature effects on the structural and surface properties were investigated by XRD, nitrogen physisorption measurement, SEM/TEM, ICP-MS, Al-27 MAS-NMR, UV-vis spectra, H-2-TPR and NH3-TPD analyses. The catalytic behavior was further evaluated in terms of acetone oxidation. The results revealed that the catalytic oxidation of acetone is mainly governed by the surface redox property, along with the acidity of the catalysts. The Ce/Al-SiO2-300, with high surface acidity and strong surface reducibility, appeared to have the best acetone catalytic performance at temperatures of 100-300 degrees C and its T-90 was at 165 degrees C under acetone inlet concentration of 1000 ppmv and GHSV of 15,000 h(-1). Furthermore, compared with literature data which catalysts were prepared using commercial silicon source and traditional organic surfactant templates, Ce/Al-SiO2-300 showed a comparable catalytic performance, indicating the great potential application of Ce/Al-SiO2 catalysts for the catalytic oxidation of acetone. (C) 2013 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.apcatb.2013.11.026
http://hdl.handle.net/11536/23943
ISSN: 0926-3373
DOI: 10.1016/j.apcatb.2013.11.026
期刊: APPLIED CATALYSIS B-ENVIRONMENTAL
Volume: 148
Issue: 
起始頁: 366
結束頁: 376
顯示於類別:期刊論文


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