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Aqueous Choline Chloride/γ‐Valerolactone as Ternary Green Solvent Enhance Al(III)‐Catalyzed Hydroxymethylfurfural Production from Rice Waste
Energy Technology ( IF 3.6 ) Pub Date : 2020-09-24 , DOI: 10.1002/ente.202000597
Qinghua Ji 1 , Xiaojie Yu 1 , Li Chen 2 , Abu ElGasim A. Yagoub 3 , Cunshan Zhou 1, 2
Affiliation  

A ternary green solvent γ‐valerolactone (GVL)/choline chloride (ChCl)/H2O system is used to convert rice waste to hydroxymethylfurfural (HMF) using AlCl3·6H2O as a catalyst. The effect of the reaction time, temperature, substrate, catalyst, and catalyst amount on the extraction of HMF by GVL is studied under this system. The results show that in ChCl/H2O, GVL/H2O, and GVL/ChCl/H2O systems, the HMF yield reaches the highest levels of 8.21, 12.24, and 18.60 mol% after reaction at 140 °C for 1 h, respectively. The yield of HMF obtained by reacting 0.42 mm of AlCl3·6H2O at 140 °C for 30 min is significantly higher than that of CrCl3·6H2O and FeCl3·6H2O. After reaction at 140 °C for 5 min, the extraction rate of HMF by GVL reaches more than 80%. The aqueous solution of ChCl forming the ternary system has high recyclability, and after six times, the yield loss of HMF is small.

中文翻译:

氯化胆碱/γ-戊内酯作为三元绿色溶剂可增强稻米废物中Al(III)催化的羟甲基糠醛生产

使用三元绿色溶剂γ-戊内酯(GVL)/氯化胆碱(ChCl)/ H 2 O体系,以AlCl 3 ·6H 2 O为催化剂将大米废料转化为羟甲基糠醛(HMF)。在此体系下,研究了反应时间,温度,底物,催化剂和催化剂用量对GVL萃取HMF的影响。结果表明,在ChCl / H 2 O,GVL / H 2 O和GVL / ChCl / H 2 O系统中,在140°C下反应140°C后,HMF收率达到8.21、12.24和18.60 mol%的最高水平。分别为1小时。通过使0.42 m m的AlCl 3 ·6H 2反应获得HMF的产率ø在140℃下30分钟,比的CrCl的显著更高3 ·6H 2 O和的FeCl 3 ·6H 2 O.在140℃下进行5分钟反应后,HMF的提取率通过GVL达到80%以上。形成三元体系的ChCl水溶液具有较高的可回收性,经过六次后,HMF的收率损失很小。
更新日期:2020-12-03
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