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- W2583438423 abstract "Mesoporous TiO2/SiO2 catalysts were prepared in order to increase the post-harvest life of climacteric fruits and vegetables reducing ethylene concentration by photo-oxidation. TiO2/SiO2 powders were synthesized by sol-gel method using titanium isopropoxide Ti(OiPr)4 and tetraethoxysilane Si(OC2H5)4 as source of metal oxides. Mesoporous SiO2 framework was used as catalyst support of nanostructured TiO2 to enhance the photocatalytic efficiency. Different TiO2/SiO2 molar ratios were prepared through sol-gel process. A liquid-crystal template route allowed to obtain the mesoporous silica structure, and contemporary TiO2 insertion in the silica framework. The X-ray diffraction (XRD) analysis demonstrated that silica insertion in TiO2 framework inhibits the anatase to rutile phase transformation at higher sintering temperature. The photocatalytic efficiency of the catalysts was measured by the photo-oxidation of ethylene gas under UV light irradiation. Complete photo-oxidation of ethylene was observed after 24 h of reaction time. Results show that the silica framework increases the surface area of the composites and make crystalline anatase phase more stable at higher temperature." @default.
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- W2583438423 date "2016-01-01" @default.
- W2583438423 modified "2023-09-24" @default.
- W2583438423 title "Photo-oxidation of ethylene over mesoporous Tio2/Sio2 catalysts" @default.
- W2583438423 doi "https://doi.org/10.13128/ahs-19132" @default.
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