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Catalytic transfer hydrogenation of biomass-derived oxygenated chemicals over hydrotalcite-like copper catalyst using methanol as hydrogen donor
Biomass Conversion and Biorefinery ( IF 3.5 ) Pub Date : 2022-01-13 , DOI: 10.1007/s13399-021-02209-y
Xiaohua Li 1 , Tieyi Liu 1 , Shanshan Shao 1 , Jinlong Yan 1 , Hongchang Zhang 1 , Yixi Cai 1
Affiliation  

The catalytic transfer hydrogenation of biomass-derived furfural, butyraldehyde, and acetone was carried out over an inexpensive copper-based hydrotalcite-like catalyst using methanol as both hydrogen donor and solvent. X-ray photoelectron spectroscopy (XPS) characterization was conducted to analyze copper valence state on the catalyst. The bivalent copper ion was reduced to monovalent and zero valent copper during the reaction. The transfer hydrogenation of furfural, butyraldehyde, and acetone was obviously promoted at higher temperature and longer duration. With regard to hydroprocessing, the yield of corresponding alcohol was greatly increased to 95.69 mol% (furfuryl alcohol), 97 mol% (butanol and methyl butanol), and 82.17 mol% (isopropanol) at 200 ℃ for 2.5 h, respectively, which indicated the superior catalytic transfer hydrogenation activity of copper-based catalyst. The reactions of different reactant were compared in this study. The highest yields of three target products were obtained at same time, which was mainly ascribed to the reduction rate of copper species. This study put forward a green, efficient hydrogenation reaction of biomass-derived oxygenated chemicals using an inexpensive copper-based catalyst and methanol system without any external hydrogen supply.



中文翻译:

甲醇作为氢供体在类水滑石铜催化剂上催化转移加氢生物质衍生含氧化学品

使用甲醇作为氢供体和溶剂,在廉价的铜基类水滑石催化剂上对生物质衍生的糠醛、丁醛和丙酮进行催化转移加氢。进行 X 射线光电子能谱 (XPS) 表征以分析催化剂上的铜价态。在反应过程中,二价铜离子被还原为一价和零价铜。糠醛、丁醛和丙酮的转移加氢在较高温度和较长时间下明显促进。对于加氢处理,在 200 ℃处理 2.5 h 时相应醇的收率分别大幅提高至 95.69 mol%(糠醇)、97 mol%(丁醇和甲基丁醇)和 82.17 mol%(异丙醇),这表明铜基催化剂具有优异的催化转移加氢活性。本研究比较了不同反应物的反应。三种目标产物同时获得最高收率,这主要归因于铜物种的还原率。本研究提出了一种绿色、高效的生物质衍生含氧化学品加氢反应,该反应使用廉价的铜基催化剂和甲醇系统,无需任何外部氢气供应。

更新日期:2022-01-13
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