Zr supported on non-acidic sepiolite for the efficient one-pot transformation of furfural into γ-valerolactone

糠醛 海泡石 化学 木质纤维素生物量 生物量(生态学) 双功能 路易斯酸 化学工程 有机化学 催化作用 原材料 发酵 海洋学 地质学 工程类
作者
Adrián García,Eleonora Monti,Alessia Ventimiglia,Nikolaos Dimitratos,Pablo J. Miguel,María Luisa Osete López,Inmaculada Álvarez-Serrano,Tomás García,Maria Pilar Pico,Ana Dejoz,Benjamín Solsona
出处
期刊:Biomass & Bioenergy [Elsevier]
卷期号:170: 106730-106730 被引量:1
标识
DOI:10.1016/j.biombioe.2023.106730
摘要

The growing demand of energy needs the search for alternative energy sources different to fossil fuels. The use of biomass as energy source is one of the most studied, because there are high value products that can be produced from biomass. One of these products is γ-valerolactone, that can be obtained from furfural, which is a biomass derived product. To transform furfural into γ-valerolactone is necessary a bifunctional catalyst and a hydrogen source. In this work, γ-valerolactone was obtained from furfural using 2-propanol as solvent and as hydrogen donor on Zr supported on sepiolite catalysts. It was demonstrated that sepiolite, which is a cheap material, can be used to develop efficient catalysts to produce high yields to γ-valerolactone from furfural in one-pot. The catalysts that presented the highest yield to γ-valerolactone were the ones with intermediate Zr-content (9–17 wt% ZrO2). The highest TOFs have been obtained by those catalysts with Zr-loading up to 9 wt% ZrO2, in which the ZrO2 nanoparticles are well dispersed on the support and no formation of large clusters of ZrO2 has been observed. Lewis and Brønsted acid sites are essential in the catalysts to produce the reactions to transform furfural into γ-valerolactone in one-pot, although in the present work, low concentration of Brønsted acid sites were observed in the catalysts. A possible positive role of basic sites to promote some intermediate steps has been also proposed. The catalytic results obtained are in the order of catalysts with Zr supported on zeolitic supports.
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