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- W2959249908 endingPage "117114" @default.
- W2959249908 startingPage "117114" @default.
- W2959249908 abstract "Mesoporous silica (MCM41) is modified with TiO2 nanoparticles by solvolysis of titanium precursor to prepare a series of Ti(x)/MCM41 supports with different titanium contents for chromium based catalytic system. Incipient wetness impregnation method is used to introduce the chromium species to produce a series of Cr(y)/Ti(x)/MCM41 catalysts with different chromium contents. The effect of both titanium and chromium loading on the catalytic performance of Cr(y)/Ti(x)/MCM41catalysts for the oxidative dehydrogenation of ethane with CO2 was investigated. The prepared catalysts were characterized by XRD, TEM, SEM, EDX-elemental mapping, N2 sorption analysis, ICP, UV–vis-DSR, XPS and TPR-H2 techniques. The results show that modification of MCM41 with TiO2 nanoparticles altered the structural properties of the synthesized catalyst, such as, chromium species dispersion and size as well as the chromium-support interaction which in turn affect the catalytic performance of synthesized catalysts. Among the modified support catalysts, the Ti(1.9)/MCM41 has enhanced the concentration and stability of Cr6+ species and resulted in comparable amounts of surface reducible chromium species. The results have revealed that the highest catalytic activity is obtained for Cr-loaded TiO2-modified MCM41 containing 1.9 wt% titanium and 8 wt% chromium. It showed superior performance for ethane dehydrogenation with CO2 at 700 °C at 51.87% ethane conversion, and 48.14 and 92.80% ethylene yield and selectivity, respectively." @default.
- W2959249908 created "2019-07-23" @default.
- W2959249908 creator A5026487263 @default.
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- W2959249908 date "2019-08-01" @default.
- W2959249908 modified "2023-10-16" @default.
- W2959249908 title "Role of TiO2 nanoparticle modification of Cr/MCM41 catalyst to enhance Cr-support interaction for oxidative dehydrogenation of ethane with carbon dioxide" @default.
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- W2959249908 doi "https://doi.org/10.1016/j.apcata.2019.117114" @default.
- W2959249908 hasPublicationYear "2019" @default.
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