Synthesis, Characterization and Catalytic Evaluation of Chromium Oxide Deposited on Titania–Silica Mesoporous Nanocomposite for the Ethane Dehydrogenation with CO2

摘要: Ti modification of mesoporous silica support has been reported as an effective way to enhance Cr–Ti–Si interactions that, in turn, impact the catalytic dehydrogenation ethane with CO2. However, such necessitates a repeated, time-consuming and tedious process. In this work, simple, fast facile approach utilized synthesize chromium-oxide-loaded titania–silica nanocomposites. A series Cr(y)/Ti(x)–Si nanocomposite catalysts varying Cr contents were prepared tested carbon dioxide. The as-synthesized characterized by XRD, TEM, SEM, BET, UV–Vis–DR, XPS H2–TPR techniques. effect titanium content, well chromium loading on performance catalysts, was investigated. It found that 2.2 8 wt % are optimum synthesized for obtaining highest activity. superior Cr(8)/Ti(2.2)–Si catalyst can be attributed higher dispersion species, content redox species surface Cr/Ti–Si catalyst. results showed efficiently dehydrogenated C2H6 presence CO2 giving 52.3% conversion 48.0% ethylene yield at 700 °C reaction temperature.