Skip to main content

Table 2 Isomerization of glucose to fructose by aliphatic primary amine catalysts with different alkyl chain length

From: Isomerization of glucose into fructose with homogenous amine-type base catalysts: amine structure, chain length, and kinetics

Catalysts (alkyl chain length) pKa Glucose con. (%) Fructose yie. (%) Fructose sel. (%)
Ethylamine (2) 10.70 38.85 ± 1.9 23.69 ± 1.2 60.98 ± 2.8
Hexylamine (6) 10.56 39.14 ± 2.0 24.34 ± 1.2 62.19 ± 2.4
Octylamine (8) 10.65 27.72 ± 1.4 19.38 ± 0.9 69.91 ± 1.8
  1. Reaction conditions: 0.5 g glucose, 5 mL H2O, aliphatic primary amine catalyst (mol% relative to glucose), 10 min, 110 °C