Insight into the alkaline earth metal salt promotion for alkali-catalyzed glucose isomerization

Abstract

Efficient and selective isomerization of glucose into fructose is the most crucial process of biorefining. Despite its rapid isomerization rate under low-temperature conditions, the alkali-catalyzed glucose isomerization is less attractive...

Glucose Isomerization to Fructose Catalyzed by MgZr Mixed Oxides in Aqueous Solution

“…The highest fructose yield was reached when the reaction was conducted for a duration of 3 h, and it began to show a slight decline when the time was prolonged. The reduced yield of fructose may be caused by side reactions of fructose that lead to degradation or polymerization to form by-products such as humin [43,44]. The yield of fructose obtained with MgO was almost 20% higher than that of ZrO 2 under the same reaction conditions, but it displayed the highest glucose conversion (>60%) at 9 h of reaction, which led to a poorer fructose selectivity (less than 50%).…”