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Synthesis of Butadiene from Formaldehyde and Propylene on Cesium Salts of Silicotungstic Heteropoly Acid
https://orcid.org/http://orcid.org/0000-0001-9797-5530
https://orcid.org/http://orcid.org/0000-0001-8646-3679
https://orcid.org/http://orcid.org/0000-0001-7862-8832
https://orcid.org/http://orcid.org/0000-0002-7691-1447
https://orcid.org/http://orcid.org/0000-0002-8742-2892
A one-stage gas-phase synthesis of butadiene from formaldehyde and propylene on silica-supported cesium salts of silicotungstic heteropoly acid was realized for the first time. The physicochemical properties of the catalysts were studied by X-ray fluorescence analysis, low-temperature nitrogen adsorption, XRD, SEM, Raman spectroscopy, and NH3–TPD. The coke deposits were studied by the TGA–DTA method. Analysis of the catalytic properties showed that an increase in the concentration of cesium atoms in CsxH4–xSiW12O40/SiO2 (x = 0–3) has a beneficial effect on the endurance of the catalyst but is accompanied by a decrease in activity and butadiene selectivity. In the case of CsH3SiW12O40/SiO2, the butadiene selectivity was 51 mol %.
Synthesis of Butadiene from Formaldehyde and Propylene on Cesium Salts of Silicotungstic Heteropoly Acid
https://orcid.org/http://orcid.org/0000-0001-9797-5530
https://orcid.org/http://orcid.org/0000-0001-8646-3679
https://orcid.org/http://orcid.org/0000-0001-7862-8832
https://orcid.org/http://orcid.org/0000-0002-7691-1447
https://orcid.org/http://orcid.org/0000-0002-8742-2892
A one-stage gas-phase synthesis of butadiene from formaldehyde and propylene on silica-supported cesium salts of silicotungstic heteropoly acid was realized for the first time. The physicochemical properties of the catalysts were studied by X-ray fluorescence analysis, low-temperature nitrogen adsorption, XRD, SEM, Raman spectroscopy, and NH3–TPD. The coke deposits were studied by the TGA–DTA method. Analysis of the catalytic properties showed that an increase in the concentration of cesium atoms in CsxH4–xSiW12O40/SiO2 (x = 0–3) has a beneficial effect on the endurance of the catalyst but is accompanied by a decrease in activity and butadiene selectivity. In the case of CsH3SiW12O40/SiO2, the butadiene selectivity was 51 mol %.
Synthesis of Butadiene from Formaldehyde and Propylene on Cesium Salts of Silicotungstic Heteropoly Acid
https://orcid.org/http://orcid.org/0000-0001-9797-5530
https://orcid.org/http://orcid.org/0000-0001-8646-3679
https://orcid.org/http://orcid.org/0000-0001-7862-8832
https://orcid.org/http://orcid.org/0000-0002-7691-1447
https://orcid.org/http://orcid.org/0000-0002-8742-2892
A one-stage gas-phase synthesis of butadiene from formaldehyde and propylene on silica-supported cesium salts of silicotungstic heteropoly acid was realized for the first time. The physicochemical properties of the catalysts were studied by X-ray fluorescence analysis, low-temperature nitrogen adsorption, XRD, SEM, Raman spectroscopy, and NH3–TPD. The coke deposits were studied by the TGA–DTA method. Analysis of the catalytic properties showed that an increase in the concentration of cesium atoms in CsxH4–xSiW12O40/SiO2 (x = 0–3) has a beneficial effect on the endurance of the catalyst but is accompanied by a decrease in activity and butadiene selectivity. In the case of CsH3SiW12O40/SiO2, the butadiene selectivity was 51 mol %.
Synthesis of Butadiene from Formaldehyde and Propylene on Cesium Salts of Silicotungstic Heteropoly Acid
Pet. Chem.
Ponomareva, О. А. (author) / Matveeva, О. D. (author) / Nikiforov, A. I. (author) / Dobryakova, I. V. (author) / Kasyanov, I. A. (author) / Shkuropatov, A. V. (author) / Ivanova, I. I. (author)
Petroleum Chemistry ; 61 ; 916-924
2021-08-01
9 pages
Article (Journal)
Electronic Resource
English
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