کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
62271 47630 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biomass into chemicals: One pot-base free oxidative esterification of 5-hydroxymethyl-2-furfural into 2,5-dimethylfuroate with gold on nanoparticulated ceria
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Biomass into chemicals: One pot-base free oxidative esterification of 5-hydroxymethyl-2-furfural into 2,5-dimethylfuroate with gold on nanoparticulated ceria
چکیده انگلیسی

2,5-Dimethylfuroate (DMF) is a valuable biomass derivative that can replace oil dependent PET polymers. 5-Hydroxymethyl-2-furfural (HMF) has been selectively converted into DMF (99 mol% yield) under mild conditions (65–130 °C, 10 bar O2) in the absence of any base, by using gold nanoparticles on nanoparticulated ceria. The catalyst can be reused several times without any loss of activity or selectivity. The absence of metal leaching has been checked by the three-phase test. A full reaction scheme has been established and it has been found that the rate-limiting step of the reaction is the alcohol oxidation into aldehyde. After this, the reaction proceeds via aldehyde conversion into hemiacetal and further oxidation into the corresponding ester. Additionally, the effect of temperature, substrate-to-catalyst ratio, alcohol and water has been studied in an attempt to explain the catalytic behaviour of the Au–CeO2.

Gold nanoparticles supported onto nanoparticulated cerium oxide catalyzed the oxidative esterification of HMF into DMF with oxygen and n-alcohols in the absence of a base.Figure optionsDownload high-quality image (68 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 265, Issue 1, 1 July 2009, Pages 109–116
نویسندگان
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