Abstract
This study investigated the effects of reaction conditions in a one-step gas-phase synthesis of butadiene from formaldehyde and propylene over a SiO2-supported silicotungstic heteropoly acid catalyst. The physicochemical properties of the catalyst were examined by X-ray fluorescence spectroscopy, low-temperature nitrogen adsorption, XRD, SEM, and NH3–TPD. It was found that, with increase in reaction temperature, the yield of butadiene passes through its maximum. Increasing the WHSV of the reactant feed lowers the formaldehyde conversion and enhances the butadiene selectivity. Raising the propylene to formaldehyde molar ratio increases the formaldehyde conversion, with the butadiene selectivity passing through its maximum. Finally, diluting the reactants with an inert gas barely affects the process performance.
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Funding
The investigation of the synthesis, physicochemical properties, and catalytic properties of the catalyst was funded by RFBR (project number 20-03-00587-a). The investigation of the structural characteristics and acidity was carried out within the State Program “Physical chemistry of surface, adsorption and catalysis.”
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I.I. Ivanova, a co-author, is the Chief Editor at the “Sovremennye molekulyarnye sita” (Advanced Molecular Sieves) Journal. The other co-authors declare no conflict of interest requiring disclosure in this article.
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Ponomareva, O.A., Artsiusheuski, M.A., Dobryakova, I.V. et al. Effects of Reaction Conditions on Synthesis of Butadiene from Formaldehyde and Propylene. Pet. Chem. 62, 972–979 (2022). https://doi.org/10.1134/S0965544122070039
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DOI: https://doi.org/10.1134/S0965544122070039