کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1389164 982848 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dehydration of fructose to 5-hydroxymethylfurfural by rare earth metal trifluoromethanesulfonates in organic solvents
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Dehydration of fructose to 5-hydroxymethylfurfural by rare earth metal trifluoromethanesulfonates in organic solvents
چکیده انگلیسی

The catalytic dehydration of fructose to 5-hydroxymethylfurfural (HMF) was investigated by using various rare earth metal trifluoromethanesulfonates, that is, Yb(OTf)3, Sc(OTf)3, Ho(OTf)3, Sm(OTf)3, Nd(OTf)3 as catalysts in DMSO. It is found that the catalytic activity increases with decreasing ionic radius of rare earth metal cations. Among the examined catalysts, Sc(OTf)3 exhibits the highest catalytic activity. Fructose conversion of 100% and a HMF yield of 83.3% are obtained at 120 °C after 2 h by using Sc(OTf)3 as the catalyst. Moreover, the catalytic dehydration of fructose was also carried out in different solvents, for example, DMA, 1,4-dioxane, and a mixture of PEG-400 and water. The results show that among the solvents DMSO is the most efficient in promoting the dehydration of fructose to HMF, and no rehydration byproducts such as levulinic acid and formic acid are detected.

The catalytic activity of various rare earth metal trifluoromethanesulfonates in the dehydration of fructose to 5-hydroxymethylfurfural (HMF) increases with decreasing ionic radius of rare earth metal cations.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Research - Volume 346, Issue 7, 15 May 2011, Pages 982–985
نویسندگان
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