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Synthesis of Butadiene from Formaldehyde and Propylene on Cesium Salts of Silicotungstic Heteropoly Acid
Petroleum Chemistry ( IF 1.4 ) Pub Date : 2021-08-09 , DOI: 10.1134/s0965544121080120
О. А. Ponomareva 1, 2 , О. D. Matveeva 1 , A. I. Nikiforov 1 , I. V. Dobryakova 1 , I. A. Kasyanov 1 , A. V. Shkuropatov 1 , I. I. Ivanova 1, 2
Affiliation  

Abstract

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 %.



中文翻译:

硅钨杂多酸铯盐上甲醛和丙烯合成丁二烯

摘要

首次实现了在二氧化硅负载的硅钨杂多酸铯盐上由甲醛和丙烯一步气相合成丁二烯。通过X射线荧光分析、低温氮吸附、XRD、SEM、拉曼光谱和NH 3 -TPD研究了催化剂的理化性质。焦炭沉积物通过 TGA-DTA 方法研究。催化性能分析表明,Cs x H 4– x SiW 12 O 40 /SiO 2 ( x= 0-3) 对催化剂的耐久性有有益影响,但伴随着活性和丁二烯选择性的降低。在CsH 3 SiW 12 O 40 /SiO 2 的情况下,丁二烯选择性为51mol%。

更新日期:2021-08-10
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