【ACS Sustainable Chemistry & Engineering】Production of a renewable functionalized 1,3-diene from furfural–acetone adduct over supported heteropolyacid catalysts
writer：Yanlong Qi, Zaizhi Liu, Shijun Liu, Long Cui, Quanquan Dai, Chenxi Bai
keywords：1
source：期刊
Issue time：2020年
The transformation of renewable feedstocks into high-value chemicals is sustainable and eco-friendly energy technology. In this work, a functionalized 1,3-diene (1-(2-furyl)-1,3-butadiene, F-diene), with significant importance in high-performance elastomer production, was produced from furfural–acetone adduct. Heteropolyacids were developed as efficient and eco-friendly catalysts, and a 96% selectivity towards F-diene was obtained. The relationship between catalyst structure and catalytic efficiency (conversion, selectivity and formation rate) suggests that F-diene production is dependent on both the Keggin structure and the acidity (amount of Br?nsted and Lewis acids) of the catalysts. Linear fitting of the F-diene formation rate and acidity indicates that the catalytic capacity enhancement is linearly correlated with the amount of Br?nsted acid sites, and the importance of Lewis acids is also deduced. Finally, Ce species was employed to improve the initial activity of the catalysts, and yielded 93% selectivity towards F-diene after 5 h on stream. Thus, a synergistic effect between Br?nsted and Lewis acids on this reaction was revealed, especial in initial stage of the reaction.