Efficient conversion of carbohydrates into 5‐hydroxymethylfurfural using choline chloride-based deep eutectic solvents
Dung Kim Thi Ngo, Trinh Hao Nguyen, Phat Ngoc Nguyen, Hai Truong Nguyen, Trinh Ngoc Thi Huynh, Ha Bich Phan, Phuong Hoang Tran
Abstract
In this study, the conversion of monosaccharides to 5-hydroxymethylfurfural (5-HMF) using different deep eutectic solvents (DESs) was investigated in various conditions. Among all the investigated DESs, [ChCl][trichloroacetic acid], based on choline chloride and trichloroacetic acid with the ratio 1:1, showed the highest catalytic activity. A maximum 5-HMF yield was 82 % for 1 h at 100 °C using [ChCl][trichloroacetic acid] as a catalyst from fructose. [ChCl][trichloroacetic acid] could be recovered and reused three times with a slight loss in activity. Our work demonstrated the low-cost and effective method for the synthesis of 5-HMF from carbohydrates.