TY - JOUR AU - Thien-Hang Nguyen AU - Trinh Nguyen AU - Ha Phan AU - Quynh-Anh Phan AU - Phuong Tran PY - 2022/12/31 Y2 - 2024/03/29 TI - Synthesis of 5-hydroxymethylfurfural from glucose and fructose using a Brønsted acid-linked amorphous carbon catalyst JF - Science & Technology Development Journal: Natural Sciences JA - STDJNS VL - 6 IS - 4 SE - Original Research DO - https://doi.org/10.32508/stdjns.v6i4.1229 UR - http://stdjns.scienceandtechnology.com.vn/index.php/stdjns/article/view/1229 AB - In recent years, carbon-based solid acid catalysts have attracted a lot of attention because they meet the environmentally friendly and sustainability criteria of "green chemistry". Following that trend, in this work, the carbon-based solid acid catalyst (BM-pTSA) was successfully prepared via two-step process: bagasse pre-treatment followed by hydrothermal carbonization using as-activated carbon and p-toluenesulfonic acid. The morphology and structure of the catalyst were determined based on FT-IR, TGA, XRD and EDX spectroscopy results. The investigation of BM-pTSA activity was carried out on the synthesis of 5-hydroxymethylfurfural (5-HMF) from glucose and fructose using DMSO as solvent. The yield of 5-HMF was monitored for 16 h of reaction with temperature variationat at 80ºC, 100ºC, 120ºC for fructose and at 100ºC, 120ºC and 140ºC for glucose. Catalyst dosage investigation was also performed with 1 mg, 5 mg, 10 mg, 15 mg and 20 mg of BM-pTSA. The results show that the catalyst has a low efficiency for glucose conversion (below 13% 5-HMF) because it contains only Brønsted acid sites. The highest 5-HMF yield achieved in this study was 88,50% in the transformation of fructose with 1 mg catalyst at 120ºC, 12 h. Even so, from an economic point of view, we estimate that the most optimal reaction conditions are at 120ºC with 1 mmol fructose, 1 g DMSO and 5 mg BM-pTSA which generates a yield of 5-HMF was 67,91% after only 4 h of reaction. ER -