| 论文标题 |
Mechanistic role of protonated polar additives in ethanol for selective transformation of biomass-related compounds |
| 作者 |
Haixin Guo, Alif Duereh, Yaqiong Su, Emiel JM Hensen, Xinhua Qi, Richard Lee Smi |
| 发表/完成日期 |
2020-05-05 |
| 期刊名称 |
Applied Catalysis B: Environmental |
| 期卷 |
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| 相关文章 |
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| 论文简介 |
We report on a combined experimental, spectroscopic and theoretical study of acid catalysed dehydration-etherification of fructose in ethanol for understanding the mechanistic role of polar solvent additives and product selectivity. Herein, we show that polar solvent additives (e.g. tetrahydrofuran, acetone, acetonitrile, gamma-valerolactone, dimethyl sulfoxide) protonated with a common solid acid catalyst in ethanol allow transformation of biomass-related compounds into desired dehydration or etherification products. Fructose in ethanol with DMSO additive is selectively transformed into 5-hydroxymethylfurfural with negligible formation of 5-ethoxymethylfurfural due to preferential DMSO protonation according to its polarity. Spectroscopic methods and density functional theory show that additives having higher polarity than ethanol are readily protonated and act as the key catalytic protonation species and as the key … |
(创新港)
