Preparation of miscellaneous ammonium aluminum carbonate hydroxide and its effect on the conversion of glucose into 5-hydroxymethylfurfural

Jixiang Zhou, Xiaoping Jiang,

Abstract

An efficient process was developed for the conversion of glucose into 5-hydroxymethylfurfural (HMF). A series of common weak alkalinity solid catalyst, ammonium aluminum carbonate hydroxide (AACH, with formula NH4Al(OH)2CO3), was prepared at different condition and used for the conversion of glucose into 5-hydromethylfurfural in ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) and dimethyl sulfoxide (DMSO) mixtures. In those catalyst, the ammonium aluminum carbonate hydroxide prepared at 140 °C for 36 h was found to be the best catalyst for this transformation and the optimal HMF yield was 42.35% at 120°C for 4h. The recycling experiments showed that the AACH owned a well stabile catalytic activity for the conversion of glucose into HMF. After six reaction runs, its catalytic activity didn’t loss significantly and a moderate HMF yield of 39 % was also obtained. In addition, various reaction conditions about the preparation for AACH, including material ratio, temperature, reaction time, were also investigated