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- W2031330502 abstract "Highly effective tungsten oxide-based catalysts are prepared by a one-pot aerosol-assisted sol–gel method. Their catalytic performances are evaluated in the cross-metathesis of ethene and trans-2-butene for the production of propene. The catalysts are comprehensively characterized by N2-physisorption, ICP-OES, SEM, TEM, XRD, UV–Vis spectroscopy, NH3-TPD, NH3-chemisorption, XPS, and TPR. Benefiting from the advantage of the aerosol process, the new WO3–SiO2 catalysts display outstanding textural properties, with a high specific surface area (500–600 m2 g−1) solely generated by calibrated super-micropores of about 2 nm. The catalyst particles are perfectly spherical in shape and feature high W dispersion and appropriate reducibility and surface acidity. As compared to reference catalysts prepared by traditional impregnation on a commercial silica support, the aerosol catalysts exhibit higher metathesis activity and shorter induction period. Conversion and selectivity are shown to increase with WO3 loading (up to 15 wt.%). Calcination temperature (450–850 °C) is identified as an essential parameter impacting significantly the texture, the surface acidity, and therefore also the catalytic activity." @default.
- W2031330502 created "2016-06-24" @default.
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- W2031330502 date "2015-09-01" @default.
- W2031330502 modified "2023-10-16" @default.
- W2031330502 title "Preparation of super-microporous WO3–SiO2 olefin metathesis catalysts by the aerosol-assisted sol–gel process" @default.
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- W2031330502 doi "https://doi.org/10.1016/j.micromeso.2015.04.020" @default.
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