Tudino Tatiane C, Nunes Renan S, Mandelli Dalmo, Carvalho Wagner A
Center for Natural Sciences and Humanities, Federal University of ABC (UFABC), Santo André, Brazil.
Front Chem. 2020 Apr 8;8:263. doi: 10.3389/fchem.2020.00263. eCollection 2020.
Both the catalytic production of 5-hydroxymethylfurfural (5-HMF) from carbohydrates and the use of a catalyst obtained from residues stand out for adding value to by-products and wastes. These processes contribute to the circular economy. In this work it was evaluated optimized conditions for 5-HMF production from fructose with high yield and selectivity. The reaction was catalyzed by an acidic carbon obtained from glycerol, a byproduct of the biodiesel industry. Special attention has been given to the use of dimethyl sulfoxide (DMSO) as a solvent and its influence on system activity, both in the presence and absence of O. Glycerol's carbon with acidic properties can be effectively used as catalyst in fructose dehydration, allowed achieving conversions close to 100% with 5-HMF selectivities higher than 90%. The catalyst can be reused in consecutive batch runs. The influence of DMSO in the presence of O should be considered in the catalytic activity, as the stabilization of a reaction intermediate by the [O:DMSO] complex is favored and, both fructose conversion and 5-HMF yield increase.
从碳水化合物催化生产5-羟甲基糠醛（5-HMF）以及使用由残渣获得的催化剂，都因能为副产品和废物增值而备受关注。这些过程有助于循环经济。在这项工作中，评估了从果糖高产率和高选择性生产5-HMF的优化条件。该反应由一种从生物柴油行业的副产品甘油获得的酸性碳催化。特别关注了二甲基亚砜（DMSO）作为溶剂的使用及其对体系活性的影响，无论有无O存在。具有酸性性质的甘油碳可有效用作果糖脱水的催化剂，能实现接近100%的转化率，5-HMF选择性高于90%。该催化剂可在连续的分批运行中重复使用。在催化活性方面应考虑DMSO在有O存在时的影响，因为[O:DMSO]络合物有利于反应中间体的稳定，果糖转化率和5-HMF产率都会增加。
