Abstract This paper provides complete loop of ionic liquid (IL) assisted glucose conversion to 5-hydroxymethylfurfural (HMF), nanofiltration membrane (NF) based separation and recyclability. The optimum HMF yield of 65.6% was obtained with 8 wt.% catalyst loading at 125 °C reaction temperature in 120 min reaction time. Ea for conversion was found to be 120 kJ/mol. NF was adopted first time to separate IL and HMF. The percentage of recovered HMF using NF for 1st, 2nd and 3rd batches are 94.87, 84.35 and 71.65 respectively. The structures of regenerated IL and HMF, obtained from NF and liquid–liquid extraction, were confirmed by NMR.

中文翻译：

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5-羟甲基糠醛离子液体辅助糖转化纳滤膜分离优化

摘要 本文提供了离子液体 (IL) 辅助葡萄糖转化为 5-羟甲基糠醛 (HMF) 的完整回路、基于纳滤膜 (NF) 的分离和可回收性。在 125 °C 的反应温度和 120 分钟的反应时间内，在 8 wt.% 的催化剂负载下获得了 65.6% 的最佳 HMF 产率。发现转化的 Ea 为 120 kJ/mol。NF 首次被采用来分离 IL 和 HMF。第 1、2 和 3 批使用 NF 回收的 HMF 的百分比分别为 94.87、84.35 和 71.65。由 NF 和液-液萃取获得的再生 IL 和 HMF 的结构经核磁共振证实。