选择性
化学
催化作用
呋喃
5-羟甲基糠醛
有机化学
羟甲基
羟甲基糠醛
钌
二甲基亚砜
原材料
试剂
糠醛
作者
Aleksei A. Turkin,Samuel Eyley,Gert Preegel,Wim Thielemans,Ekaterina Makshina,Bert F. Sels
标识
DOI:10.1021/acscatal.1c01949
摘要
Selective conversion of 5-hydroxymethylfurfural (HMF) to liquid fuels is an important step in the valorization of carbohydrates. Although not paid much attention to in the scientific community, we discovered an enormous impact of the HMF purity on the product selectivity during its hydroconversion in the presence of Ru/C. The presence of dimethyl sulfoxide (DMSO) showed the most dramatic effect on the aromatic hydrogenation activity, with almost full selectivity for either 2,5-dimethylfuran (DMF) or 2,5-dimethyltetrahydrofuran (DMTHF). The sulfur to surface ruthenium molar ratio predicts the selectivity outcome. A similar selective poisoning effect of DMSO was observed while using 2,5-bis(hydroxymethyl)furan (BHMF) as feedstock. These findings provide an approach to modify the selectivity of HMF conversion using the Ru/C catalyst and draw attention to the utmost importance of biobased reagent purity for catalytic studies to avoid erroneous conclusions about catalyst properties.
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