4.6 Article

High-Yield Synthesis of 1-Hydroxyhexane-2,5-dione via Hydrogenation/Hydrolysis of 5-Hydroxymethyl-furfural in Ionic Liquid-Assisted Multi-Phase Systems

期刊

ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 11, 期 6, 页码 2520-2530

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.2c06692

关键词

5-hydroxymethylfurfural; 1-hydroxyhexane-2; 5-dione; multiphase catalysis; ionic liquids; bio-based platform chemicals; hydrogenation; hydrogenolysis

向作者/读者索取更多资源

Various multiphase systems consisting of immiscible liquid water, a hydrocarbon, and an ionic liquid were studied for the hydrogenation/hydrolysis of 5-hydroxymethylfurfural. A liquid triphase system composed of water, isooctane, and methyltrioctylammonium chloride achieved excellent selectivity control with high yields of the desired product. By separating the reagents and catalyst in different phases, the catalyst could be effectively recycled and reused multiple times without any loss of activity or selectivity.
Different multiphase (MP) systems comprising immiscible liquid water, a hydrocarbon, and an ionic liquid (IL) were investigated for the combined hydrogenation/hydrolysis of 5-hydroxymethylfurfural (HMF) to 1-hydroxyhexane-2,5-dione (HHD) in the presence of 5% Ru/C as a catalyst. Excellent control of selectivity was achieved using a water, isooctane, and methyltrioctylammonium chloride ([N8881][Cl]) liquid triphase: at 100 degrees C and 40 bar of H2, HHD was obtained as an exclusive product (98%), and it was isolated in an 85% yield at complete conversion of HMF. Both the reagents and the products were partitioned in the aqueous phase, while, by tuning the relative proportions of the MP components, the catalyst (Ru/C) could be perfectly segregated in the IL layer, where it could be recycled and reused up to six times without any loss of activity and selectivity, in a robust semi-continuous mode. Under such conditions, a reaction productivity of up to 9.7 mmol HHD (gcat center dot h)-1 was reached with negligible metal leaching (<0.67 ppb).

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据